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几道补充教材的语法,请指教

14.Tiny quantities of more than thirty rare gases, most of them industrial by-products, threaten to warm
    the Earth's atmosphere even more rapidly than carbon dioxide during the next fifty years.
  (A) to warm the Earth's atmosphere even more rapidly than carbon dioxide during the next fifty years
  (B) to warm the Earth's atmosphere even more rapidly over the next fifty years than carbon dioxide
       will
  (C) during the next fifty years to warm the Earth's atmosphere even more rapidly than carbon dioxide
  (D) a warming of the Earth's atmosphere during the next fifty years even more rapid than carbon
       dioxide's
  (E) a warming of the Earth's atmosphere even more rapid than carbon dioxide's will be over the next
  fifty years

[如果是将来时,为什么threaten不用将来时]


31. While the owner of a condominium apartment has free and clear title to the dwelling, owners of
cooperative apartments have shares in a corporation that owns a building and leases apartments to
them.
   (A) While the owner of a condominium apartment has free and clear title to the dwelling,
   (B) The owner of a condominium apartment has free and clear title to the dwelling, but
   (C) Whereas owners of condominium apartments have free and clear title to their dwellings,
   fD) An owner of a condominium apartment has free and clear title to the dwelling, whereas
   (E) Condominium apartment owners have a title to their dwelling that is free and clear, while

[why is the answer is C, what are the mistakes in the other opitions]
42. In assessing the problems faced by rural migrant workers, the question of whether they are better off
materially than the urban working poor is irrelevant.
(A) In assessing the problems faced by rural migrant workers, the question of whether they are better
off materially than the urban working poor is irrelevant
(B) The question of whether the rural migrant worker is better off materially than the urban working
poor is irrelevant in assessing the problems that they face.
(C) A question that is irrelevant in assessing the problems that rural migrant workers face is whether
they are better off materially than the urban working poor.
(D) In an assessment of the problems faced by rural migrant workers, the question of whether they are
        better off materially than the urban working poor is irrelevant.
(E) The question of whether the rural migrant worker is better off materially than the urban working
poor is irrelevant in an assessment of the problems that they face.
[A的问题是逻辑主语吗,答案是D]

47. The lawyer for the defense charged that she suspected the police of having illegally taped her
    confidential conversations with her client and then used the information obtained to find evidence
    supporting their murder charges.
   (A) used the information obtained to find evidence supporting
   (B) used such information as they obtained to find evidence supporting
   (C) used the information they had obtained to find evidence that would support
   (D) of using the information they had obtained to find evidence that would support
   (E) of using such information as they obtained to find evidence that would be supportive of
[答案是D]


63. The sale of government surplus machinery will begin at 9 a.m. and continue until the supply lasts.
   (A) will begin at 9 a.m. and continue until the supply lasts
   (B) begins at 9 a.m., continuing until the supply lasts
     (C) will begin at 9 a.m. and, until the supply lasts, will continue
    (D) begins at 9 a.m. and, as long as the supply may last, it continues
    (E) will begin at 9 a.m. and continue as long as the supply lasts

[答案是E, what are the mistakes with the other opinions]


先谢谢大家了。

[em10]
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63:首先until一般要前否定,只有都是until选项时,才把它当成till用,排除abc。d的it不知道指代什么。只剩e了。

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14:现在会threaten将来的变暖,故threaten用一般现在时

31:考点:1。while 转折:DE把while/whereas放在后面,句子中心转移
2.泛指和特指:the/their/adj等修饰限定的noun是特指,owners or a owner 都是泛指,
要对称,要末全特指,要末全泛指

42是考察逻辑主语

47:题目主干:The lawyer for the defense charged that she suspected the police of doing sth and of doing sth.(of 一定要补出,以免连接对象有争议),没有见过such as 接句子的,而且support 比be supportive简洁多了。

63。不好意思,解题思路说不上来,主要看动作之间的逻辑关系

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31:首先单复数要前后统一,排除a、b、d,其次,根据结构排除e。其实就是对称问题嘛。
当然其他还有很多小问题。如b的but语气太重、主从互换(改变原义),e太罗嗦。

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