1、 Unit4 同步检测.阅读理解ALess than 60 percent of students now entering fouryear American colleges are likely to graduate.The completion rate is lower than that of almost any other wealthy country.On Tuesday President Obama gave a nationally broadcast speech to students about the importance of staying in sch
2、ool.He spoke on the first day of classes at a high school in Virginia.He talked about personal responsibility，and used himself as an example of someone who overcame difficulties.“My father left my family when I was two years old，and I was raised by a single mother who had to work and struggled at ti
3、mes to pay the bills and wasnt always able to give us things the other kids had.There were times when I missed having a father in my life.There were times when I was lonely and felt like I didnt fit in，” said President Obama.But he told students that problems in their own lives should not stop them
4、from learning.“Theres no excuse for talking back to your teacher，or cutting class or dropping out of school.Theres no excuse for not trying.”This was not the first presidential speech to students.Ronald Reagan spoke from the White House in 1988.And George HW.Bush spoke from a school in Washington in
5、 1991.But many conservatives (保守者)criticized plans for the speech.Some called it “socialized education” or federal interference(干预) in local schools.Others feared it would be too political.Some schools decided not to show the speech.But the White House released(发布) the text on Monday，and that calmed
6、 a lot of critics.On Sunday，on the CBS program “Face the Nation”，Untied States Secretary of Education Arne Duncan said 30 percent of students do not graduate from high school.He called the dropout rate “staggering(令人吃惊的)”It represents more than a million students every year who entered ninth grade b
7、ut did not complete 12th grade.【文章大意】本文是一篇新闻报道，主要介绍了美国总统奥巴马发表电视演讲，呼吁学生们克服困难，继续学业，人们对演讲有不同的评价。1President Obama gave a nationally broadcast speech on Tuesday to_Acriticize the students who talked back to their parentsBtell the students how he struggled to go to school in his childhoodCencourage studen
8、ts to drop outDpersuade the students to go on with their studies even if they have problems解析：选D。细节理解题。根据第二段内容可知，奥巴马发表电视演讲的目的在于呼吁学生们克服困难，继续学业。2Which of the following statements is true according to the passage?ASome people considered Obamas speech to be too political.BGeorge HW.Bush spoke to student
9、s from the White House in 1990.CObamas mother left him when he was two years old.DThe White House decided not to release the text on Monday.解析：选A。细节理解题。根据倒数第二段第三句可知，有些人担心演讲太过于政治化。3It can be inferred from the passage that_A40 percent of American high school students drop out Bthe dropout rate of Amer
10、ican schools is amazingConly one million students can finish 12th grade each yearDnot all the people support the presidents speech解析：选D。 推理判断题。根据倒数第二段的内容可知，许多保守派人士批评了总统的演讲，故可推知，并不是所有的人都支持总统的演讲。4Which of the following could be the best title of the passage?AObamas Hard ChildhoodBObama Encourages Stud
11、ents to Carry on StudiesCObamas Speech Met CriticismDAmazing Dropout Rate of the US解析：选B。 主旨大意题。本文主要介绍了美国总统奥巴马发表电视演讲，呼吁学生们克服困难，继续学业。BThe pinyon(食松)is one of the most important tree species in the American West，providing food and shelter for hundreds of wildlife species including songbirds，squirrels
12、and rabbits.Pinyon seeds are often used to make sweets.But a new research suggests that manmade noise may threaten the future of the pinyon.Jays(松鸦) are important spreaders of pinyon seeds.Each fall，a single bird picks up thousands of seeds and then hides them in various places.Throughout the winter
13、，when other food becomes short，the birds feast on hidden seeds.But some seeds never get recovered.Instead，they come out and form the next generation of trees.The researchers conducted their study in a woodland of New Mexico.They spread 20 seeds under each of 12 pinyonssix in quiet spots and six in l
14、oud areas.Every day for three days，the team came back to each tree to see how many seeds had been eaten and to replenish(补充) some.They found quieter areas of the woodland were more likely to have jays and four times more with pinyon seedlings than loud regions.Meanwhile，the mice that lived in the lo
15、uder environments ate more seeds there，destroying them in the digestive process.The results suggest noise might influence the ability of pinyons to survive from generation to generation.The influence of the noise could be felt for many years to come since pinyons live for decades.Fewer seedlings in
16、noisy areas might eventually mean fewer mature trees，because the trees are so slowgrowing.Meanwhile，a lower thickness of pinyons would mean less critical(极重要的) habitat for the hundreds of species that depend on them for survival.【文章大意】美国西部有一种叫做食松的树种。食松为数百种野生动物提供了食物和栖息地，同时它的种子还可以用来制作甜食。但是一项最新的研究表明，人造
17、噪音或许会威胁到食松的生长。5Jays are important to the pinyon for the reason that _Athey dont feed on pinyon seedsBthey prevent the seeds being eatenCtheir waste can make the land richDthey are actually tree planters in a way解析：选D。推理判断题。根据第二段的第一句“Jays(松鸦) are important spreaders of pinyon seeds.”以及该段的最后两句“But som
18、e seeds never get recovered.Instead，they come out and form the next generation of trees.”可知，从某种意义上说，松鸦是食松的种植者。所以D项正确。6What animals might not be threatened by noise according to the passage?ASquirrels.BMice.CJays. DRabbits.解析：选B。细节理解题。根据第三段中的“They found quieter areas of the woodland were more likely
19、to have jays and four times more with pinyon seedlings than loud regions.Meanwhile，the mice that lived in the louder environments ate more seeds there.”可知，在比较安静的地区更可能有松鸦和更多的食松幼苗。与此同时，生活在噪音较大的环境中的老鼠却会吃更多的种子。由此可推知，老鼠可能不会受到噪音的威胁。7The research in the passage shows _Amice prefer to live in a loud environ
20、mentBquiet places are good for pinyons to growCjays hide pinyon seeds in quiet placesDnoisy places are good for pinyons to grow解析：选B。推理判断题。根据第三段中的“They found quieter areas of the woodland were more likely to have jays and four times more with pinyon seedlings than loud regions.”可知，安静的环境更适合食松的生长。所以答案
21、为B项。文中提到噪音大的环境不会对老鼠有太大影响，而没有说老鼠更喜欢生活在噪音大的环境里，所以A项不正确；文中提到松鸦会把食松种子藏在不同的地方，而没有说是安静的地方，所以C项不正确。8What can be the best title for the passage?AThe Effect of Noise on the PinyonBA Useful Plant，the PinyonCMice，the Enemy of the PinyonDJays，the Enemy of the Pinyon解析：选A。标题判断题。通读全文内容可知，本文主要谈及了噪音对食松生长的影响。第一段的最后一
22、句是本文的主题句，也为解答该题提供了依据。故选A。.语法填空Woman：What seems to be the problem，officer?Policeman：I stopped you 1._ we are looking for a 2._ (steal) car that matches this description.Can you show me your license and car registration?Woman：Sure.3._ you can see，I own this car.Policeman：Yes，and youre not a sixfootfiv
23、e man 4._ dark hair，either!Woman：Oh，well，youre right about that! I 5._ (have) blonde hair since I was a baby，and.Policeman：Have you seen 6._ strange in this area?Woman：Like What?Policeman：Someone 7._ looks like he doesnt belong here.Or someone driving 8._ (real) fast and 9._ (make) a lot of noise.Wo
24、man：No，I cant say that I have，officer.I will keep my eye out，though.Policeman：All right.Sorry 10._ (trouble) you，madam.Have a nice day.1解析：考查状语从句。此处用because表示原因。答案：because2解析：考查非谓语动词。此处用过去分词作定语表示已经发生。答案：stolen3解析：考查定语从句。as you can see表示“你能看到”；as引导非限制性定语从句。答案：As4解析：考查介词。with表示“带有；长着”。答案：with5解析：考查时态。
25、根据后面的since可知用现在完成时态。答案：have had6解析：考查不定代词。anything strange一些奇怪的事情。疑问句中用anything。答案：anything7解析：考查定语从句。who引导定语从句修饰someone。答案：who8解析：考查副词。修饰形容词fast，要用副词。答案：really9解析：考查非谓语动词。和前面的driving并列，现在分词作定语修饰someone。答案：making10解析：考查非谓语动词。“形容词动词不定式”，不定式作原因状语，因为trouble发生在情绪sorry之前，故用不定式的完成时。答案：to have troubled.短文改
26、错)One Saturday，I was doing my homework while it suddenly occurred to me that it was my mother birthday the next day.However，I forgot it complete.I was worried that I didnt prepare any present to her.At that moment，the idea of online shopping came my mind.I clicked the mouse and search some famous sh
27、opping websites.Having compared the price of many dresses，I chose one with a reasonable price which I supposed Mum would appreciate it and bought it as soon as possible.The next morning I received the dress as expected without get out of my room.You see，online shopping has made our life much conveni
28、ent and colorful.答案：One Saturday，I was doing my homework it suddenly occurred to me that it was my birthday the next day.However，I forgot it .I was worried that I didnt prepare any present her.At that moment，the idea of online shopping came my mind.I clicked the mouse and some famous shopping websit
29、es.Having compared the of many dresses，I chose one with a reasonable price which I supposed Mum would appreciate and bought it as soon as possible.The next morning I received the dress as expected without out of my room.You see，online shopping has made our life /much convenient and colorful.书面表达假设你是
30、李华，学校英语社团将举办主题为“Live a lowcarbon life”的演讲比赛，你准备参赛，请你写一份100词左右的发言稿。写作要点：1陈述理由：为什么要过低碳生活？2如何过低碳生活？提出至少三条建议。3倡议同学们过低碳生活。要求：1内容充实，结构完整，语意连贯。2书写须清晰、工整。Hello everyone，_Thanks.One possible version：Hello_everyone，With the changing climate and severe pollution，I strongly believe we all should be living lowca
31、rbon lives today.Living a lowcarbon life is a good way to reduce emissions of greenhouse gases.I shall do it in the following ways.At home，I shall only turn on the lights if necessary，take shorter showers and keep the refrigerator and air conditioners in the lowcarbon mode to save energy.For transportation，the bus or bicycle will be my first choice.When shopping，Ill limit the use of plastic bags and wherever possible，I will separate my rubbish into nonrecyclable and recyclable waste.I am hoping that more and more schoolmates will join me.Thanks.