2. 职称英语
  3. According to United States Air Force officials, a cannon shooting dead chickens

According to United States Air Force officials, a cannon shooting dead chickens

游客2025-02-25  47
问题 According to United States Air Force officials, a cannon shooting dead chickens at airplanes has proved helpful to demonstrate what kind of damage can result when jets fly into a flock of large birds.
选项 A、shooting dead chickens at airplanes has proved helpful to demonstrate
B、shooting dead chickens at airplanes has proved itself helpful as a demonstration of
C、shooting dead chickens at airplanes proves itself helpful as demonstrating
D、that shoots dead chickens at airplanes proves itself helpful to demonstrate
E、that shoots dead chickens at airplanes has proved helpful in demonstrating
答案 E
解析 如果知道helpful in doing sth．的用法，就可直接选出答案E。但还可以用其他办法来解此题。(1)cannon之后用现在分词短语修饰不妥。因为若是那样，就意味着“该炮一直都在射击死鸡”，表明了一连续性动作。这与常理不符。而用that从句就表明了一模糊的时间概念，在此句中更为准确。(2)prove之后的itself多余。
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