1、课时作业21单元知识整合.单词拼写1Its simply childish (孩子气的) to refuse to talk to her.2I wish you would stop treat (对待) me like a child!3It is my belief that good manners (礼貌) are very important to everybody.4He was very lucky to have survived (存活) the accident unhurt!5Modern schools are superior (高级的) to those tra
2、ditional ones in many ways.6Several cars are available within this price range (范围)7I was breathless (喘不过气的) after swimming three miles and I had to stop to have a rest.8We all adore (敬爱) his courage to save the drowning people in Guangzhou.9A career as an actor requires one hundred percent commitme
3、nt (投入)10Alison and I had been at school together, and I felt great affection (爱慕) for her.单句语法填空1Can you give me your guarantee that the goods will be_delivered (deliver) before Friday?2Our teacher recommended us to_see (see) the film during the last summer holiday.3Believe it or not, I did not tel
4、l her the disturbing (disturb) news.4The company has sixty trucks for conveying vegetables to the whole sale market.5Accompanied (accompany) by his dog, the old man walked to the park.6She got a scholarship to Cambridge but dropped out a year later.7The headmaster is trying to find a way to make the
5、 rules accessible (access)8To my excitement, my sons oral English has been improving steadily (steady)9It was what he did rather than what he said that annoyed me.10Trapped (trap) in the fire, the young man felt very hopeless.11My daughter used to_like (like) chocolates, but now she likes fruits.12W
6、hen he worked in Jinan he would go to the bar for a drink after work.13The manager refuses to accept any of the five new proposals made by the contractors.14Life is like an ocean; only the strongwilled can reach the other shore.15Its an eitheror situationwe can buy a new car this year or we can go o
7、n holiday but we cant do both.选词填空dream of， fall in love with， turn up， die out， in vain， hang on， a range of， turn around， have access to， out of sight， be keen on， to be honest1The public dont have_access_to the site.2To_be_honest,_Im not satisfied with it.3He turned to look back, but by then she
8、was out_of_sight.4Turn_around and you can see the gifts we prepared for you.5Hang_on a second! The head teacher has something to say.6Most supermarkets sell a_range_of organic products.7Elephants would die_out soon if men were allowed to shoot as many as they wish.8They fell_in_love_with each other
9、at first sight.9Luckily for us, our efforts were not in_vain.10He turned_up an hour late for the meeting.11To my surprise, the girl is_keen_on playing football very much.12There was a time when many boys dreamed_of becoming pilots.完成句子1Once you sign up for it, it_is_likely/possible_that you will be
10、a new member of our school table tennis team.一旦报名，你很可能会成为我们学校乒乓球队的新成员。2Yao Ming is more_than a player, hes also an Asian giant.姚明不仅仅是一个运动员，也是一个亚洲巨人。3Down jumped_the_man from the horse.那人从马上跳下来。4I was at Central School last year, and so_was_my_friend_Bob.去年我在中心学校，我的朋友鲍勃也在那里。5I stood by the door, not_
11、daring_to_say a word.我站在门旁，不敢说一句话。6This is not Jack. You must_have_dialed_the_wrong_number.我不是杰克，你一定拨错号码了。7I used_to_smoke,_but I gave it up a couple of years ago.我以前吸烟，但几年前就戒掉了。8She would_sit_there for hours doing nothing at all.她常常一连几个小时坐在那儿，什么也不做。9Jack cant_have_stolen_your_money. He has gone hom
12、e.杰克不可能偷你的钱，他回家了。10There are many countries in Asia, among/of_which China is the largest one.亚洲有许多国家，中国是最大的一个。.阅读理解Even if trees cannot walk, they are still on the move.In parts of the Arctic, entire forests are moving northward. Across the Arctic, temperatures are rising faster than anywhere else i
13、n the world. As that happens, the tree line that marks where forests stop and the treeless tundra (冻原) starts has been shifting northward. Trees growing along the tree line must protect themselves from the cold wind. To do this,_plants tend to grow horizontal (水平的) branches low to the ground. The en
14、ergy it takes for trees to grow this way means they dont have enough energy to make seeds.But as Earths climate has been warming, trees no longer have to just grow horizontally. Many can instead grow up toward the sky. This takes less energy. And with all that leftover energy, these trees have start
15、ed producing more seeds. This happens especially in places where white spruce (白云杉) grows.White spruce, which is a North American tree, is quite able to produce a lot of seeds, which can move long distances in the wind. When windblown seeds end up on the tundra beyond the tree line, they eventually
16、can sprout(发芽) new trees. This explains how a forest can move. Of course, the process would work only if the tundra were warm enough. But in recent years, the whole planet has been warming.New trees will provide shelters for some snow. Keeping the suns rays from making the white surface disappear. I
17、nstead, the trees absorb the suns heat. This warms the surrounding air. The extra warmth encourages even more trees to produce seeds. That further boosts a forests ability to expand. In addition, more trees will trap more snow, preventing much of it from being blown away. Snow can trap heat in the s
18、oil below, which encourages trees to grow. The recent rise of temperatures has helped more trees grow past the tree line. People worry about impacts on the animals that depend on frozen conditions for food and shelter.1What is the main cause of the trees in the Arctic moving northward?AThe shrinking
19、 of northern tundra.BThe rising temperature.CThe fierce and cold wind.DThe abundant resources in the north.答案：B解析：细节理解题。根据第二段的第二句“Across the Arctic, temperatures are rising faster than anywhere else in the world.”以及本段的整体内容可知，不断上升的气温是北极圈树木北移的主要原因，即B项正确。2What does the underlined word “this” in Paragra
20、ph 2 mean?ATo produce more seeds.BTo move northward.CTo respond to the climate change.DTo protect themselves from the cold wind.答案：D解析：代词指代题。根据画线词前的“Trees growing along the tree line must protect themselves from the cold wind.”可知，画线词this 指代的是本句中的“protect themselves from the cold wind”，故D项正确。3What ca
21、n be inferred from the last paragraph?ANew trees can trap the snow, which may make the soil colder.BThe trapped snow prevents new trees from producing more seeds.CNew trees can make the surrounding air warmer.DNew trees can bring more food and shelter to local animals.答案：C解析：推理判断题。根据最后一段中的“New trees
22、 will provide shelters for.the surrounding air.”可推知，新树会让周围的空气更加温暖，故C项正确。4The passage is most probably taken from _.Aa science report Ba health reportCa fashion magazine Da childrens magazine答案：A解析：文章出处题。根据文章的整体内容可推知，本文主要研究的是气候变暖对北极圈树木的影响，故该文应选自科研报告，故A项正确。.书面表达请根据下面的提示写一篇关于电影流浪地球(the wandering earth)
23、的影评。1电影于2月5日(中国的大年初一)上映，由郭帆导演，由吴京及其他几名著名演员(吴孟达，李光洁等)主演。2太阳急剧老化，地球面临被吞噬的危险，来自世界各地的人们协力建造了巨大的发动机系统助推地球向太阳系外迁移。这一次，我们没有抛弃地球，而是带着它一起逃亡。3反映主题：人类走到哪里，地球就在哪里，它是我们的家园。The film the wandering Earth, directed by Guo Fan, was released on Feb 5, the first day of Chinese New Year. Wu jing and some other famous ac
24、tors starred in it, such as Wu Meng Da, Li Guang jie and so on.In the film, Earth is in danger of being destroyed by the dying sun. In response, humans around the world work together to build a huge engine system that will push Earth away from the sun, instead of abandoning Earththis time were taking it with us.The film tells us: Earth goes wherever humans go because its our home, so we should love it and protect it.