1、综合能力训练卷(八)第一部分：英语知识运用(共两节，满分45分)第一节：单项填空(共15小题；每小题1分，满分15分)从每题所给的A、B、C、D四个选项中，选出可以填入空白处的最佳选项。 1. If you take_ risk of not wearing a seat belt, you are at _ risk. A. the ；/ B. /; / C. /; the D. the ; the2. I began to feel _ in the new school when I saw some familiar faces.A. at home B. at heart C. at
2、 will D. at sight3How could you _ your friend so easily?She is the kind of person who _ in a crowd.Apick out; stands out Bmake out; stands forCtake out; stands by Dbring out; stands aside4. Before selecting the curtain for your newlydecorated house，its important to know what colors look great_the wa
3、ll paper.Aon Bwith Cin Dagainst5. The doorway is low, so _ your head when you go in.A. attend B. mind C. protect D. guard6. Now, boys，Ill_the story where I stopped yesterday.Atake up Btake on Ctake in Dtake over7. How I wish we studied _ there are fewer exams! Youre joking!A. where B. in which C. th
4、e place where D. in where8. Under such circumstances, it is little _ that they experience difficulties. A. pity B. shame C. relief D. wonder9. The tall figure that you saw was none _ our manager.A. rather than B. or rather C. more than D. other than 10. Where are the students? How could they keep us
5、 waiting for so long? They started an hour ago and they_ be here in fifteen minutes, I think.A. can B. wouldC. should D. must11. What do you enjoy most _ in the summer holidays? Playing table tennis.A. killing time B. to kill time C. spending the time D. to spend the time12. _is often the case with
6、elder people, my grandma talked about my new hairstyle for at least 30 minutes. A. What B. Which C. As D. It13. Could I speak to _ is in charge of International Sales please?A. who B. what C. whoever D. whatever14. The professor, _out the project, made a comment on the report. A. was opposed to carr
7、y B. opposed to carry C. opposed to carrying D. objected to carrying15Im terribly sorry to have put you through so much trouble. _. I know you didnt mean to.A. Forget about it B. No troubleC. All right D. Youre welcome 第二节：完形填空(共20小题；每小题1.5分，满分30分)阅读下面短文，掌握其大意，然后从每题所给的A、B、C、D四个选项中，选出最佳选项。Its no secr
8、et that many children would be healthier and happier with adoptive parents than with the parents that nature dealt them. Thats especially_16_of children who remain in homes where theyre badly treated_17_the law blindly favors biological parents. Its also true of children who_18_for years in foster (
9、寄养) homes because of parents who cant or wont care for them but_19_to give up custody (监护) rights.Fourteenyearold Kimberly Mays_20_neither description, but her recent court victory could_21_help children who do. Kimberly has been the_22_of an angry custody battle between the man who raised her and h
10、er biological parents, with whom she has never lived. A Florida judge_23_that the teenager can remain with the only father shes ever known and that her biological parents have “no legal_24_”on her. Shortly after_25_in December 1978, Kimberly Mays and another baby were mistakenly switched and sent ho
11、me with the_26_parents. Kimberlys biological parents, Ernest and Regina Twigg, received a child who died of a heart disease in 1988. Medical tests_27_that the child wasnt the Twiggs own daughter, but Kimberly was, thus leading to a custody_28_with Robert Mays. In 1989, the two families_29_that Mr. M
12、ays would maintain custody with the Twiggs getting_30_rights. Those rights were ended when Mr. Mays decided that Kimberly was being_31_.The decision to_32_Kimberly with Mr. Mays caused heated discussion. But the judge made it clear that Kimberly did have the right to sue (起诉)_33_her own behalf. Thus
13、 he made it clear that she was_34_just a personal possession of her parents. Biological parentage does not mean an absolute ownership that cancels(取消) all the_35_of children.16A.terrible Bsad Ctrue Dnatural17A.but Bif Cwhen Dbecause18A.settle Blive Csuffer Dgather19A.have Brefuse Cstick Dfail 20A.li
14、kes Bgives Cfits Dknows21A.actually BeventuallyCsuccessfully Dabruptly22A.victim BobjectCsacrifice Dteenager23A.ruled BbelievedCordered Dindicated24A.expectation BactionCeffect Dclaim25A.birth BjudgmentCoperation Dschool26A.biological BownCkind Dwrong27A.examined BexplainedCdecided Dshowed28A.battle
15、 BrightCagreement Ddecision 29.A.thought BquarreledCagreed Dprepared 30A.equal BsameCvisiting Dspeaking 31A.harmed BforbiddenCwounded Dhidden32A.make Bleave Cgive Dkeep33A.by Bthrough Con Din 34A.more than Bno more thanCnot more than Dless than35A.freedom BhappinessCrights Dideas第二部分：阅读理解(共20小题；每小题2
16、.5分，满分50分)阅读下列短文，从每题所给的A、B、C、D四个选项中，选出最佳选项。AThe early 1900s were very different from today.Toys，though they have evolved in many ways，were still the delight of children everywhere.Theodore Roosevelts Presidency marks the beginning of the “Teddy Bear”. In the year 1902，toy bears were named “Teddy” af
17、ter the presidents nickname.The Teddy Bear became known worldwide，and is still known and loved today.It was only a few years later that the Teddy Bears were mass produced.In 1913，an item called the Erector Set was invented.It was a steel，motorized toy that children could use to build models of anyth
18、ing.Its creator was AC.Gilbert，a medical doctor.Charles Pajeau created a similar wooden set called Tinker Toys in the year 1914.Tinker Toys were made for younger children.Raggedy Ann dolls first came on the scene after newspaper cartoonist Johnny Gruelle reproduced the doll he made for his daughter.
19、That was in 1915.The following year，an architects son named John Lloyd Wright，invented Lincoln Logs，which were interlocked to make structures.Two years after Mickey Mouse was created，stuffed(填塞)Mickey Mouse dolls were made by Charlotte Clark.This was the start of Disney merchandise.The yoyo became p
20、opular in the United States after Donald Duncan bought a yoyo company in 1929.The ViewMaster，a three dimensional viewer，was developed by a camera enthusiast named William Gruber.The toy became popular when Gruber licensed Disney characters to make still,3D images from Disney movies and television pr
21、ograms.Finally，in 1940，model airplanes were mass produced.They started out as a way for manufacturers to sell planes to the military，but later caught on as a toy.The toys that we know and love today have had their roots from these ancient times.Isnt it interesting to know that if it hadnt been for a
22、ll these creative people，most of the games you know today would never have been?36Why were toy bears named “Teddy”？ATo be suitable for mass production.BTo be easily pronounced by children.CTo meet the advertisers needs.DTo memorize President Theodore Roosevelt.37In which aspect do the toys created b
23、y Gilbert differ from those by Charles?AShape. BMaterial used.CThemes. DPrice.38When did the ViewMaster become popular?AAfter William Gruber was born.BAfter Gruber licensed Disney characters.CTwo years after Mickey Mouse was created.DWhen Disney merchandise was started.39From the last paragraph we c
24、an learn that_.Athose people who created these games should never be forgottenBsome toys created in ancient times now disappearCcreativity exists in every field all the timeDtoys nowadays are totally different from those in ancient times40What does the passage talk about?AThe function of toys.BThe h
25、istory of Disney characters.CToys in the early 1900s.DThe financial meaning of toys.B “In only six days I lost seven pounds of weight.”“Two full inches in the first three days！”These are the kinds of statements used in magazine，newspaper，radio and television ads，promising new shapes and new looks to
26、 those who buy the medicine or the device.The promoters of products say they can shape the legs，slim the face，smooth wrinkles，or in some other way to add to beauty or desirability.Often such products are nothing more than moneymaking things for their promoters.The results they produce are questionab
27、le，and some are dangerous to health.To understand how these products can be legally promoted to the public，it is necessary to understand something of the laws covering their regulation.If the product is a drug，FDA(Food and Drug Administration)can require proof under the Food，Drug，and Cosmetic Act th
28、at is safe and effective before it is put on the market.But if the product is a device，FDA has no authority to require premarketing proof of safety or effectiveness.If a product already on the market is a danger to health，FDA can request the producer or distributor to remove it from the market volun
29、tarily，or it can take legal action，including seizure(查封)of the product.One notable case a few years ago involved an electrical device called the Relaxacisor，which had been sold for reducing the waistline.The Relaxacisor produced electrical shocks to the body through contact pads.FDA took legal actio
30、n against the distributor to stop the sale of the device on the grounds that it was dangerous to health and life.Obviously，most of the devices on the market have never been the subject of court proceedings(法律诉讼)，and new devices appear continually.Before buying，it is up to the consumer to judge the s
31、afety or effectiveness of such items.41It can be inferred that the ads mentioned in the text are_.Aobjective BcostlyCunreliable Dillegal42.Which of the following is TRUE according to the text?AThe court is in charge of removing dangerous products.BNew products are more likely to be questionable.CThe
32、 production of a device must be approved by FDA.DThe promoters usually just care about profits.43FDA can ask for the proof of safety and effectiveness of a product_.Aif it is a drugBif it is a deviceCif its consumers make complaintsDif its distributors challenge FDAs authority44The Relaxacisor is me
33、ntioned as_.Aa product which was designed to produce electricityBa product whose distributor was involved in a legal case Ca successful advertisement of a beauty productDan example of a quality beauty product45The author intends to_.Amake consumers aware of the promoters false promisesBshow the weak
34、ness of the law on product safetyCgive advice on how to keep young and beautifulDintroduce the organization of FDACChristopher Thomas, 27, was a writer by night and a teacher by day when he noticed he was always tired and was losing weight fast. Diagnosed with diabetes(糖尿病), Thomas would need to inj
35、ect himself with insulin(胰岛素) three times a day for the rest of his life or risk nerve damage, blindness, and even death. And if that werent bad enough, he had no health insurance.After a month of feeling upset, Thomas decided hed better find a way to fight back. He left Canton, Michigan for New Yor
36、k, got a job waiting tables, nicknamed himself the Diabetic Rockstar, and created , a free online community for diabetics and their loved onesa place where over 1,100 people share personal stories, information, and resources.Jason Swenckis son, Kody, was diagnosed with diabetes at six. Father and so
37、n visit the online childrens forums(论坛) together most evenings. “Kody gets so excited, writing to kids from all over，” says Swencki, one of the sites volunteers. “They know what hes going through, so he doesnt feel alone.”Kody is anything but alone: Diabetes is now the seventh leading cause of death
38、 in the United States, with 24 million diagnosed cases. And more people are being diagnosed at younger ages.These days, Thomass main focus is his charity(慈善机构), Fight It, which provides medicines and supplies to people225 to datewho cant afford a diabetics huge expenses. Fightit.org has raised about
39、 $ 23,000in products and in cash. In May, Thomas will hold the first annual Diabetic Rockstar Festival in the Caribbean.Even with a staff of 22 volunteers, Thomas often devotes up to 50 hours a week to his cause, while still doing his fulltime job waiting tables. “Of the diabetes charities out there
40、, most are putting money into finding a cure，” says Bentley Gubar, one of Rockstars original members. “But Christopher is the only person I know saying people need help now.”46Which of the following is TRUE of Christopher Thomas?AHe needs to go to the doctor every day.BHe studies the leading cause o
41、f diabetes.CHe has a positive attitude to this disease.DHe encourages diabetics by writing articles.47D was created for _.Adiabetics to communicateBvolunteers to find jobsCchildren to amuse themselvesDrock stars to share resources48According to the text, Kody _.Afeels lonely because of his illnessBb
42、enefits from Chelps create the online kids forumsDwrites childrens stories online49What can we learn about Fight It?AIt helps the diabetics in financial difficulties.BIt organizes parties for volunteer once a year.CIt offers less expensive medicine to diabetics.DIt owns a wellknown medical website.5
43、0The last paragraph suggests that Thomas _.Aworks fulltime in a diabetes charityBemploys 22 people for his websiteChelps diabetics in his own wayDtries to find a cure for diabetesDMotorists who used to listen to the radio or their favorite tunes on CDs may have a new way to entertain themselves, aft
44、er engineers in Japan developed a musical road surface.A team from the Hokkaido Industrial Research Institute has built a number of “melody roads”， which use cars as tuning forks(音叉)to play music as they travel.The concept works by using grooves(凹槽)They are cut at very specific intervals in the road
45、 surface. The melody road uses the spaces between to create different notes.Depending on how far apart the grooves are, a car moving over them will produce a series of high or low notes, and designers are able to create a distinct tune.Patent documents for the design describe it as notches(刻痕)“forme
46、d in a road surface so as to play a melody without producing simple sound or rhythm and reproduce melodylike tones”There are three musical strips in central and northern Japanone of which plays the tune of a Japanese pop song. Reports say the system was invented by Shizuo Shinoda.He scraped some mar
47、kings into a road with a bulldozer(推土机)before driving over them and found that they helped to produce all kinds of tones.The optimal speed for melody road is 44 kph，but people say it is not always easy to get the intended sound.“You need to keep the car windows closed to hear well，”wrote one Japanes
48、e blogger.“Driving too fast will sound like playing fast forward, while driving around 12 mph20 km/hhas a slowmotion effect, making you almost carsick.”51.According to the passage，melody roads use_to create different notes.Acars BgroovesCspaces between intervals Dbulldozers52We can learn from the pa
49、ssage that the highness of notes is depended on_.Ahow far the grooves areBhow big the grooves areCthe number of the groovesDthe speed of the car53The underlined word “optimal” in the passage might mean_.Afastest BpossibleCbest Dsuitable54In order to hear the music well，you have to_.Adrive very fastB
50、drive slowlyCopen the windows wideDkeep the windows closed55Whats the best title of the passage?AA New Type of MusicBMelody Roads in JapanCA Musical Road SurfaceDA New Invention in Japan第三部分：写作(共两节，满分35分)第一节：阅读表达(共5小题；每小题2分；满分10分)阅读短文，并按照题目要求用英语回答问题。 Big storms. High waves. Technical failures. Lonel
51、iness. After battling hard times and danger for over nine months, British teenager Mike Perham made history last month as the youngest person to sail solo (单独) around the world. The 17yearold made the record after he cleared the Panama Canal (巴拿马运河) and then sailed through the Caribbean and home acr
52、oss the Atlantic. Mike is only three months younger than Zac Sunderland, the 17yearold American boy who had taken the crown as the youngest solo aroundtheworld sailor in July. The two youngsters met in Cape Town in South Africa as they crossed the globe in different directions. Mike insisted they we
53、re not rival (竞争对手). “No. Its two teenagers going out there, living their dream and having the adventure of a lifetime，” he said. Mike may be young, but he is no stranger to sailing adventures. He picked up the hobby at age 6 when his father took him out in a small boat on a local lake. Father and s
54、on sailed separate boats across the Atlantic when Mike was 14, making him the youngest person to cross that ocean solo. That record gave him the taste for this even greater challenge. On the recent journey, the scariest moment for Mike came when his sailboat was hit by storms in the southern Indian
55、Ocean. “We were picked up by what felt like a 60foot wave and threw down on our side at 90 degrees，” he said. “It felt like I was going right over. Stuff was flying around and I just thoughtOh no” At other times, he had to dive into the Pacific and fix problems. He tied himself to the boat, jumped i
56、nto the water and went to work with a knife in 30second dives underneath (在之下) the boat to cut a rope away. Mike said he felt proud that he made his dream come true. “Youve got to have confidence in yourself that you will make it，” he said.56Whats the main idea of the passage？(No more than 15 words)
57、_57Which canal did Mike Perham cross? (No more than 3 words)_58What does the underlined word “taste” in the fifth paragraph mean? (1 word)_59What did Mike believe in? (No more than 10 words)_60What do you think of Mike Perham? (No more than 10 words)_第二节：书面表达(满分25分)You are supposed to write a compos
58、ition on the topic Making Friends Selectively or Extensively. You should write more than 100 words and base your writing on the outline given below：1有些人认为应该有选择地交朋友；2另一些人认为应该广泛地交朋友；3你的看法。Making Friends Selectively or Extensively?_综合能力训练卷(八)第一部分第一节1A 考查固定短语的用法。take the risk of冒着的危险；at risk 处于危险中；遭受危险。
59、2A 语境：当我看到一些熟悉的面孔时，我开始感到舒畅了。feel at home感到畅快、自在； at heart在内心里(在本质上)；at will 随意地；at sight 一见就3A考查动词短语辨析。pick out挑选出，辨认出；stand out突出，出色；make out理解，辨认；stand for代表，象征；take out拿出，取出；stand by支持，拥护，袖手旁观；bring out取出，显示；stand aside躲开，让开。根据句意选A。4D本题考查介词的搭配。句意为：在为你的新房装修选窗帘的时候，重要的是要知道什么样的颜色映衬在墙纸上是最好看的。against是映
60、衬的意思。根据句意可知，D为最佳答案。5B mindbe careful about 留心，留神。6A 考查词组辨析。此处所要表达的意思是接着昨天的故事继续讲，A项take up表示“继续”，符合题意。take on“承担，呈现，雇用”；take in“理解，吸入，欺骗”；take over“接管，接替”，都不符合语境。7A 本题考查地点状语从句。由where引导出地点状语，表示“在考试少的地方”。 8.D it is little/ small/ no wonder that 不足为怪。9D 本题考查词组辨析。rather than而不是；or rather更确切地说；more than超过
61、，多余；other than除了。none other than意为“正是”。10C should在这里表示预期，意为“应该会，可能”。can表示有能力做或能够发生；would表示想象中的结果；must表推测，或表必须。 11.B 把对话中的答语放到问句中可得I enjoy playing table tennis mostin the summer holidays.由此可知本题设空处应该是句子的目的状语而不是enjoy的宾语。故选B。12C 考查as作关系代词的用法。as“正如，就像”，引导非限制性定语从句。13C whoever引导的名词性从句作to的宾语，whoever又在这个从句中作
62、主语。whoever引导名词性从句时相当于any person who/the person who“任何人，无论谁，的人”。14C 短语be opposed to sth./doing sth.意为“反对”。此处用过去分词作后置定语，相当于定语从句 who was opposed to carrying out而object to (doing)sth.表示“反对(做)某事”，要作定语也要用现在分词形式。15A 该题考查情景交际用语。Forget about it“算了吧，别提了”；No trouble“不麻烦”；All right“行了，好吧”；Youre welcome“不客气”。根据语
63、境可知，本题最佳答案为A。第二节16C许多孩子和养父母在一起要比和亲生父母在一起健康、开心得多，这并不是一个秘密。对于那些在家里受亲生父母虐待的孩子而言尤其如此(true)，因为(because)法律盲目认为生理上的父母会更好。本句为对比句。可参照下文Its also true of children because of17D表原因，解析见上一题。18C同样，对于那些在收养家庭中多年遭受(suffer)痛苦的孩子们来说也是如此，因为他们的养父母不能或者不愿意照顾他们，但是又拒绝(refuse)放弃监护权。19B解析见上一题。20C14岁的Kimberly不适合(fits)上述两种情况。21B
64、Kimberly的判例对属于上述两种情况的孩子而言最终(eventually)是有所帮助的。22BKimberly向来是她的养父与从未和她一起生活过的亲生父母争夺监护权的对象或目标(object)。23A法官裁决(ruled)Kimberly可以继续与其唯一熟悉的养父生活在一起，驳回亲生父母对Kimberly监护权的要求(claim)。24D解析见上一题。25A根据本句后的baby可判断此处为birth。句意：Kimberly出生后不久就被抱错。26D既然是mistakenly switched“被交叉抱错”，那么与之回家的自然是wrong parents，当然不会是亲生父母。27D另外一个小
65、孩在1988年生病夭折。医学检查表明(showed)这个小孩不是Kimberly亲生父母的孩子，Kimberly才是。Kimberly亲生父母由此与其养父展开了一场争夺监护权的斗争(battle)。28A解析见上一题。29C最后双方达成协议(agreed)，养父保留监护权，亲生父母有探望(visiting)权。30C解析见上一题。31A但养父若认为亲生父母的探望使Kimberly受到了伤害(harmed)，则该权利终止。32B把Kimberly留给(leave)她的养父引起了激烈的讨论。33C法官明确地说，Kimberly也有权为了(on)自己的利益提起诉讼(比如，假设在亲生父母的经济状况远好
66、于养父的情况下)。on ones behalf 为的利益，代表。34AKimberly并不仅仅(more than)是其亲生父母的私有财产。more than不仅仅；no more than仅仅；not more than不超过，至多，不比更；less than小于，少于，不超过，不到，决不，毫不。35C血缘关系并不意味着亲生父母可以剥夺孩子全部的权利(rights)。第二部分A36D细节理解题。根据第二段第二句“toy bears were namedTeddy after the presidents nickname.”可知选 D。37B细节理解题。根据第三、四段关键信息可知，两者的差别
67、在于所使用的材料不同，一个是steel，一个是wood。38B细节理解题。根据倒数第三段第二句可知选B。39A细节理解题。根据最后一段最后一句可知答案。40C主旨大意题。本文主要描述了the early 1900s时期玩具的发展情况。所以正确答案为C。B41C推理判断题。文章提出许多媒体上的广告都含有虚假成分，夸大其词，而事实上广告中的产品往往不具有其所宣称的效果。文章第四段提到这些产品的效果是值得怀疑的，不可靠的，甚至是危险的。objective“客观的，不带偏见的”；costly“昂贵的”；unreliable“不可靠的”；illegal“不合法的，违法的”。42D细节理解题。第四段第一句
68、话说“通常这些产品对推销者来说只是挣钱的工具”，显然D项“推销者通常只关注利润”符合题意。43A细节理解题。从第五段第二句话可知A项正确，如果是药物的生产，则必须向FDA证明其安全性和有效性。44B细节理解题。倒数第二段提到的这个案例与上一段最后一句话紧密相连，是对其进行举例说明；第三句话说FDA对the Relaxacisor的经销采取了法律措施，责令其停止销售，所以答案为B。45A主旨大意题。作者通过对一些虚假广告问题的分析，提醒消费者关注生产者对产品的不实宣传和虚假承诺，避免上当受骗，故A项最为恰当。C46C细节理解题。通读全文可知，Christopher Thomas对于自己的疾病采取
69、了积极的态度，所以C项正确。47A细节理解题。根据第二段“，a free online community for diabetics and their loved onesa place where over 1,100 people share personal stories, information, and resources”可知A项正确。48B细节理解题。第三段Father and son visit the online childrens forums(论坛) together most evenings. “Kody gets so excited, writing to
70、 kids from all over，” says Swencki, one of the sites volunteers. “They know what hes going through, so he doesnt feel alone.” 可知B项正确。49A细节理解题。根据倒数第二段Fight It, which provides medicines and supplies to people225 to datewho cant afford a diabetics huge expenses. Fightit.org has raised about $23,000in p
71、roducts and in cash.可知A项正确。 50C推理判断题。根据文章内容可知Thomas在用自己的方式帮助糖尿病人，所以C项正确。D51C细节理解题。根据第三段最后一句话The melody road uses the spaces between to create different notes.可以得出答案为C。52A细节理解题。根据第四段可知，声音的高低取决于凹槽的间距，因此正确答案为A。53C词义猜测题。根据倒数第二段，并联系上下文可以推断，optimal在这里意为“最佳的，最理想的”，因此正确答案为C。54D细节理解题。根据最后一段第一句话可以得出选项D正确。其余三项
72、都与原文说法不符。55B主旨大意题。文章讲述的是日本发明音乐路面的事情，故选B。第三部分第一节56How a British teenager succeeded in sailing solo around the world as the youngest person.主旨大意题。本篇文章主要介绍了英国少年Mike Perham是怎样成功地孤帆环游世界，并成为当今世界上孤帆环游世界的最年轻的人。57The Panama Canal.细节理解题。从第二段的The 17yearold made the record after he cleared the Panama Canal得出答案。
73、58Experience.词义猜测题。根据上文的Father and son sailed separate boats across the Atlantic when Mike was 14, making him the youngest person to cross that ocean solo可猜出，此处的taste应该是“体验”的意思。59Having confidence in yourself will make you successful.推理判断题。从文章的最后一段的Youve got to have confidence in yourself that you w
74、ill make it可推出答案。60开放式问题。第二节One possible version：Making Friends Selectively or Extensively?When it comes to whether we should make friends selectively or extensively, there is no complete agreement among people. Some people take it for granted that we should make friends selectively and carefully. H
75、owever, others maintain that making friends extensively should be regarded as the better choice. Those people who hold the first opinion believe that its sensible to look for friends who have similar ideal and outlook on life as well as temperament. In addition, they neednt waste time dealing with t
76、he people they dont like and prevent themselves from being affected by those people. However, still others think differently. In their opinions, the more friends we make, the easier our life will be. Besides, they argue that we can absorb and learn from the advantages of different people.Weighing up
77、 these two arguments, I prefer the former one. For one thing, not all friends are suitable for us and easy to get along with. For another, friends with similar goals will help us sweep off difficulties. Considering these, we may reasonably conclude that making friends selectively can bring us true friends.