94.The Coast Guard is conducting tests to see whether pigeons can be trained to help find survivors of wrecks at sea.
(A) to see whether pigeons can be trained to help find
(B) to see whether pigeons can be trained as help to find
(C) to see if pigeons can be trained for helping to find
(D) that see if pigeons are able to be trained in helping to find
(E) that see whether pigeons are able to be trained for help in finding
我明白为什么选A，但对于E的一个解释有点不明白，为什么be able to要换成can？不是can表示能力，be able to表示可能性吗？我觉得在这里应该是表示鸽子的能力啊？
我在牛津的字典中查到can可以表示可能性的意思 ：That cannot be Mary--she is in hospital.不知道你注没注意到E中can的前面有个词－－CONCISE，G的语法中要求简洁啊。
to help find 对吗?
应该是to help finding才对吧?
那位请给讲讲?
I have some explanations from the LDOCE for you, songyeonpp:
The basic usages of help as a verb:
help somebody (to) do something
I helped her to carry her cases up the stairs. She helped him choose some new clothes. herbal products that help you to relax and sleep
help (to) do something
She was coming to help clean the machines.
help somebody with something
Can I help you with the washing up?
somebody can't help (doing) something
also somebody can't help but do something
used to say that someone is unable to change their behaviour or feelings, or to prevent themselves from doing something
She couldn't help it if she was being irrational.
'Stop biting your nails.' 'I can't help it .'
I can't help the way I feel about you.
Lee could not help but agree with her.
For the word is widely used in various ways, there are some other usages you may want to check out for yourself in a dictionary like LDOCE.
May the force be with you.
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