英语每日一练

　　First, use the choices provided in the box to complete the phrases. Second, use the completed phrases to fill in the blanks of the text. Mark your answer on the Answer Sheet.

　　Text Two

　　Text Three

　　A. imitateB. between C. otherwiseD. accelerate

　　Phrases:

　　A. from (1) ___________its feathers

　　B. would be difficult to (2) ___________

　　C. it (3) ___________could

　　D. enabling the bird to (4) ___________

　　The emperor penguin traps air in its feathers. Not only does this insulate the bird against extreme cold but it also enables it to move two or three times faster than (5) ___________. How? Marine biologists have suggested that it does so by releasing tiny air bubbles (6) ___________.As these bubbles are released, the reduce friction on the surface of the penguin’s wings, (7) ___________.

　　Interestingly, engineers have been studying ways to make ships go faster by using bubbles to reduce friction against their hulls (船身). However, researchers acknowledge that further investigation is challenging because “the complexity of penguin’s wings (8) ___________.”

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正确答案

　　1.【答案】B

　　【解析】from between +n从……之间。

　　2.【答案】A

　　【解析】 缺少不定式后面的动词，可以排除B项和C项。69空前面的would可知是作谓语。返回原文定位到最后的75题。根据最后一段可知设计师正研究各种方法来通过释放气泡，减少船身的摩擦力来使船加速。然而，研究人员了解到，进一步的调查正受到挑战可以推断这种船身模仿企鹅翅膀是困难的。可知A符合题意。

　　3.【答案】C

　　【解析】 本句有主谓，并空缺处是在could前面可以排除A,B,D项。可知C符合题意。

　　4.【答案】D

　　【解析】缺少不定式后面的动词，可以排除选项B和C。并A项更符合69题可知D符合题意。

　　5.【答案】C

　　【解析】比较级，意思是气泡可以使企鹅的速度快上2-3倍，可以推断是比原来速度快上2-3倍。可知C符合题意。

　　6.【答案】A

　　【解析】第一句话可知企鹅的羽毛储存空气，可以推断是从羽毛中释放的气泡使企鹅加速。可知A符合题意。

　　7.【答案】D

　　【解析】上面说企鹅羽毛中释放的气泡使企鹅加速，这句话主要表达气泡使企鹅加速的原理。可知D符合题意。

　　8.【答案】B

　　【解析】缺少原因状语从句的谓语部分。可知B符合题意。