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[Issue Essay]

试题详情

题目:

Analytical!

选项:

答案:

提问:

For some birds the sense of smell appears to paly a role in navigation, since pigeons with surgically removed olfactory nerves ( were found to have increased difficulties ) in homing. A. were found to have increased difficulties B. have been found to have increased difficulty C. were found to have increasing difficulty D. had been found to have increased difficulties E. have been found to have increasing difficulties 答案是B,我选的A。不明白为什么要用现在完成时,而且感觉困难应该是复数。麻烦老师讲解。

解答:

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阅读385202
解答: sysadmin

提问:

老师,这道题为什么要用现在完成时呢?我觉得用蛇起源于四腿蜥蜴不是持续的动作,也没有持续的影响

解答:

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阅读424513
解答: 金栩竹老师

提问:

请问老师这道题做题思路,可以理解为消序处理吗?比如八个字母排一列,A,B,C三个字母顺序不影响,排列方式为A(8,8)除A(3,3),如果是,为什么这么用?

解答:

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解答: 徐小梅老师

提问:


解答:

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解答: 徐小梅老师

提问:

请问may老师此题思路

解答:

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阅读426931
解答: 徐小梅老师

提问:

请问may老师此题思路

解答:

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阅读426752
解答: 徐小梅老师

提问:

请问may老师此题思路

解答:

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阅读427547
解答: 徐小梅老师

提问:

请问may老师此题思路

解答:

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阅读427875
解答: 徐小梅老师

提问:

请问may老师此题思路

解答:

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阅读428009
解答: 徐小梅老师

提问:

请问may老师此题思路

解答:

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阅读428193
解答: 徐小梅老师

提问:

请问may老师此题思路

解答:

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阅读440154
解答: 徐小梅老师

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