評論
打印
蟲）。它看起來就像沒有殼的蝸牛，其爬行過的地方會留下一條細細的蹤跡。它要使用大量的能量制造粘滑的粘液，以便在其上爬行。移動同樣的的距離，老鼠只需要其所耗費能量的十二分之一。
科學(xué)家們認為，由于蛞蝓（鼻涕蟲）利用能量的效率很低，所以它的生活必然受到一定的限制。換句話說，它們都被迫把自己束縛在很小的區(qū)域之中來搜尋食物和尋找合適的生活條件。人類曾經(jīng)面臨過這樣的問題嗎?
【答案解析】
1.【解析】［D］屬同義轉(zhuǎn)換題，本題是一種排除選擇題。根據(jù)題干中的中心詞“movement to do something”，可以將答案定位在小標題“Moving to Survive”下第二段的前兩句話，“Like the shark, most animals use movement to find food. They also use locomotion to escape enemies, find a mate, and explore now territories”。該句與題干是一種同義轉(zhuǎn)換，選項A、B和C在原文中均有提及，所以不是正確選項；答案D在原文沒有提及，所以是正確答案。
2.【解析】［B］屬細節(jié)推斷題。題干考查汽車、火箭和潛艇的例子是為了說明什么，其中的“examples of automobiles, rockets and submarines”是關(guān)鍵詞，可以將答案定位在文章小標題“Moving to Survive”下第三段的前兩句話，“Humans have the added advantage of using their various inventions to move about in just about any kind of environment. Automobiles, rockets, and submarines transport humans from deep oceans to as far away as the moon”，第二句話所舉例子正是為了說明第一句話的內(nèi)容，這與B項意思一致，而其它選項在文中均未提及。
3.【解析】［A］屬細節(jié)推斷題。分析題干，本題考查鯊魚在水中快速游動的關(guān)鍵是在什么。其中的“key”是關(guān)鍵詞，可以將答案定位在小標題“Skin Is the Key”下首段的第一句話，“The biologists discovered that the skin of the shark is the key to the animal’s high efficiency in swimming through the water”，這與選項A完全一致，所以直接選擇A即可。其它選項在文中均有提及，但是都不符合題干的要求。
4.【解析】［D］屬細節(jié)推斷題。題干中的“the Duke University scientists”是關(guān)鍵詞，可以將答案定位在小標題“Skin Is the Key”下第二段的第一句話，“The Duke University biologists have found that the greatest stretching occurs where the shark bends its body while swimming”。這與選項D的內(nèi)容完全一致，所以答案選D項，而其它選項原文均為提及，為干擾項。
5.【解析】［C］屬細節(jié)推斷題。題干中“a belted radial tire”是關(guān)鍵詞，可以將答案鎖定在文章小標題“Source of Energy”下第一段的第三句話，“Just as a radial tire is inflated by pressure, so, too, is the area just under the shark’s collagen ‘radials’”。其中的“just as”和“so”正說明了兩者的相似之處在于“inflated by pressure”，所以答案應(yīng)該是C。選項A和B是兩者的不同之處，選項D在文中沒有提及。
6.【解析】［A］屬細節(jié)推斷題。題干中的關(guān)鍵詞是“a laminar flow”，所以可以將答案鎖定在文章小標題“Dolphin Has Speed Record”下，根據(jù)該節(jié)第一段的倒數(shù)第三、四句話，“Normally when a fish or other object moves slowly through the water, the water flows smoothly past the body. This smooth flow is known as laminar flow.”。題干是對這兩句話的改寫，所以正確答案是A選項。其它三個選項的意思均不符合“a laminar flow”的定義，與題干要求不符。
7.【解析】［C］屬同義轉(zhuǎn)換題。題干中“a slug”和“a mouse”均為關(guān)鍵詞，可以直接定位在小標題“Other Animals Less Efficient”下第一段的第二句話，“It uses so much energy ... a mouse traveling the same distance uses only one twelfth as much energy”。題干是對該句的同義改寫，所以正確答案是C 12 times，其它選項均與原文內(nèi)容不符。
8. 【解析】feeling the vibrations of a struggling prey鯊魚靠感受獵物游動的震動來發(fā)現(xiàn)獵物。
9. 【解析】collagen fibers 在Skin Is the Key中，第二、三句話，The fibers are called collagen fibers。
10. 【解析】some fantastic involuntary changes 在Source of Energy中，第二段倒數(shù)第一句話就是本題答案。
Part III Listening Comprehension
Section A
11. W:Oh, you are back. This is a pleasant surprise. It is not lunch time yet. Are you through work?
M:No, I forgot some papers this morning.
Q:Why did the man return home?
【解析】［D］這是一對夫妻的對話。妻子說：你回來啦，真是個驚喜，還沒到午飯時間呢，你工作完了么？丈夫說：沒有，我今早忘了帶一些文件。可見，丈夫回家來是為了取些文件。本題需要間接推理。
12.M:Two ten-cent stamps and four eight-cent stamps, please.
W:Here you are. That will be fifty- two cents.
Q:Where did this conversation most probably take place?
【解析】［D］關(guān)鍵詞在于聽出stamps郵票。男士說：我要兩張十分的郵票和四張八分的郵票。女士說：給你，一共52美分。顯然，這是在郵局買郵票時發(fā)生的一段對話。
13.M:You said the paper you’ve just finished fell on the floor, but I can’t find it.
W:Look under the desk, back in the corner.
Q:What does the woman mean?
【解析】［C］男士說：你說你剛完成的論文掉地上了，但我沒找到。女士說：看看桌子下面，后面的角落。因此，女士的意思是要他在桌子下面再仔細找找。
14. M:The train is late. When will it arrive?
W:They say it’s late for 25 minutes, so it should be here at 11: 46.
Q: When will the train arrive?
【解析】［C］本題中女士提到火車晚點25分鐘是個干擾項，她說的后半句話即是答案so it should be here at 11: 46。
15. M:I would like to move to the suburbs, but I don’t have enough money to pay the high taxis.
W:I wish you could. It’s nice to live there.
Q:Why isn’t the man moving to the suburbs?
【解析】［D］本題為推理題，對話中沒有直接給出答案，需要推理。男士說：我很想住郊區(qū)，但我沒那么多錢付高額的打的費。打的費高只能是因為郊區(qū)離工作的地點太遠的緣故。
16.W:Jack, would you like to go to the club with us tomorrow night?
M:I wish I could, but I have to work on my term paper.
Q:Is Jack going to the club?
【解析】［A］女士問：杰克，明天晚上跟我們一起去俱樂部吧？男士說：我很想去，但是我必須寫我的學(xué)期論文。由此可見，杰克是不會去俱樂部的。
17. M:Think it over carefully, you must have left it somewhere.
W:But the problem is that I have to have it now. I need it to use my car, and when I get home, to open the door.
Q: What happened to the woman?
【解析】［B］對話中的女士丟了鑰匙，但是對話里卻沒出現(xiàn)鑰匙keys這一詞。男士說：仔細想想，你一定把它落在哪兒了。女士說：問題是我現(xiàn)在需要用它，我要用它來開車，回家后還要用它開門。那她丟的一定是鑰匙了。
18. W:Weren?t you nervous when the professor called on you in class?
M:I?d say I was shaking all over.
Q:How did the man feel when he was called on?
【解析】［A］女士問：當教授在班上點到你的時候你不緊張嗎？男士說：我渾身都在抖。shaking all over說明男士非常擔(dān)憂和害怕。
Now you’ll hear two long conversations.
Conversation One
W:Let’s go in here and order some coffee while we look at your pictures.
M:Good idea. We’d both like coffee, please. OK, here’s one of Ed’s, my roommate. I took this picture right after we had arrived at the school this fall. We had just met, in fact. And this was our room of the dormitory while we were unpacking all our things. What a mess!
W:You certainly had a lot of boxes. How did you ever find room for everything?
