1.B

　　可以將答案定位在小標(biāo)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”。

　　2.B

　　題干考查汽車(chē)、火箭和潛艇的例子是為了說(shuō)明可以使人類(lèi)到達(dá)任何環(huán)境，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(biāo)題“Moving to Survive”下這句話，“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”。

　　3.C

　　本題考查鯊魚(yú)在水中快速游動(dòng)的關(guān)鍵是在皮膚。其中的“key”是關(guān)鍵詞，可以將答案定位在小標(biāo)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”，與本題句子完全一致，所以直接選擇C即可。

　　4.D

　　題干中的“collagen fibers to the greatest extent”是關(guān)鍵詞，可以將答案定位在小標(biāo)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”。這與本題句子的內(nèi)容完全一致，

　　5.E

　　題干中“a belted radial tire”是關(guān)鍵詞，可以將答案鎖定在文章小標(biāo)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(shuō)明了兩者的相似之處在于“inflated by pressure”，所以答案應(yīng)該是E。

　　6.G

　　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(biāo)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(duì)這兩句話的改寫(xiě)，所以正確答案是G。

　　7.I

　　題干中“a slug”和“a mouse”均為關(guān)鍵詞，可以直接定位在小標(biāo)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(duì)該句的同義改寫(xiě).

　　8.A

　　題干中的shark, prey, struggling均為關(guān)鍵詞，可以直接定位在A段，Suddenly sensitive nerve ending in the shark’s skin picked up vibrations of a struggling fish.

　　9.C

　　在Skin Is the Key中，C段中第二、三句話，The fibers are called collagen fibers.

　　10.F

　　在Source of Energy中，可以定位到第二段倒數(shù)第一句。

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2013 年12月四六級(jí)考試改革及備考指導(dǎo)匯總