2. 考研
  3. A. marine B. have discovered C. slows Phrases: A. This turbulence muses friction and【T1】______the fish down B. Another kind of【

A. marine B. have discovered C. slows Phrases: A. This turbulence muses friction and【T1】______the fish down B. Another kind of【

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问题 A. marine B. have discovered C. slows
Phrases:
A. This turbulence muses friction and【T1】______the fish down
B. Another kind of【T2】______animals is dolphin
C. Biologists studying the dolphin【T3】______that
    【T4】______This seagoing mammal has been clocked at speed of 32 kilometers(20miles)an hour.【T5】______, like the shark, the animal’s efficient locomotion can be traced to its skin. A dolphin’s skin is made up in such a way that it offers very little resistance to the water flowing over it. 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. However, at faster speeds the water becomes more turbulent along the moving fish.【T6】______
【T1】
选项 A、 
B、 
C、 
答案C
解析 slow…down的意思是“减缓”，This turbulence muses friction and slows the fish down的意思是“这种搅动的作用能引起摩擦，从而使周围的鱼游动的速度慢下来。”故选C。
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