2. 外语
  3. The United States calls for some countries to research the bionics since 1960. The mosquito is under study because its sonar is

The United States calls for some countries to research the bionics since 1960. The mosquito is under study because its sonar is

admin2009-04-23  55
问题 The United States calls for some countries to research the bionics since 1960.
The mosquito is under study because its sonar is much more efficient than man-made sonar.
选项 A、Y
B、N
C、NG
答案B
解析 第七段第二句话叙述了"The bat is under study because the bat’s sonar is much more efficient than man-made sonar"．之所以研究蝙蝠的声呐系统是因为蝙蝠的声纳系统比人造声纳更有效，而不是研究蚊子。由此可知题干不符合原文意思。
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