试着解释一下，说得不对表打 
以下是引用xshaolong在2006-3-17 12:04:00的发言：
21. A proposal has been
made to trim the horns from rhinoceroses to discourage poachers; the question
is whether tourists will continue to visit game parks and see rhinoceroses
after their horns are trimmed.
(A) whether tourists will continue to visit game parks and
see rhinoceroses after their horns are
(B) whether tourists will continue to visit game parks to
see one once their horns are
(C) whether tourists will continue to visit game parks to
see rhinoceroses once the animals’ horns have been
(D) if tourists will continue to visit game parks and see
rhinoceroses once the animals’ horns are（C）
(E) if tourists will continue to visit game parks to see
one after the animals’ horns have been
key: C
A中虽然有their指代不清的问题，但主句用将来时，从句应用一般现在时，C却违背此原则。
这里的 tourists will continue to visit game parks to
see rhinoceroses 和 the animals’ horns have been trimmed 不是主从句的关系
once 更是提示了这里要用完成时态
63. After July, anyone
disposing of or servicing refrigerators must capture the
chlorofluorocarbons in the refrigerant chemicals.
(A) anyone disposing of or servicing
(B) those who dispose or service
(C) anyone disposing of or who services
(D) the disposal or repair of（A）
(E) someone who disposes or repairs
Key: A
为何是A，service有动词词性吗？
-_- service 有没有动词词性一查不就知道了么？金山里有：
vt.
保养, 维修
118.Art museums do
not usually think of their collections as capital or consider the interest
income that would be generated if a portion of the capital would have been
invested in another form.
(A) be generated if a portion of the capital would have
been
(B) have been generated if a portion of the capital would
have been
(C) be generated if a portion of the capital were
(D) be generated if a portion of the capital was（C）
(E) be generated if a portion of the capital had been
Key: C
a portion of the capital是复数形式？
这里是虚拟语气，不管单复数都用were
119.Artificial
intelligence emerged during the late 1950’s as an academic discipline based on the
assumption that computers are able to be programmed to think like people.
(A) are able to be programmed to think like people
(B) were able to be programmed to think as people
(C) can be programmed to think as people can
(D) could be programmed to think like people（D）
(E) are capable of being programmed to think like people do
Key: D
问个题外话，若有一选项以as people do结尾,是否该选择此选项?
多谢!
我觉得这个问题和og189很像，你可以看看那道题的讨论。gemj NN有解释。
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发表于 2006-3-17 12:04:00
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