[讨论]马上要考试了, 有几道语法题请教(2) of3

马上要考试了, 有几道语法题请教 :

4.

In 1981 children in the United States spent an average of slightly less than two and a half hours a week doing household chores; by 1997 they had spent nearly six hours a week.

A or B ? ANS: B

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A. chores; by 1997 they had spent nearly six hours a week
B. chores; by 1997 that figure had grown to nearly six hours a week
C. chores, whereas nearly six hours a week were spent in 1997
D. chores, compared with a figure of nearly six hours a week in 1997
E. chores, that figure growing to nearly six hours a  week in 1997

5.
Trans World Entertainment Corporation, which owns the Record Town and Saturday Matinee retail chains, announced that since sales of up to one-fourth of its stores are poor, they will be closed.

A is wrong ?   Mine A, ans D
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a)    that since sales of up to one-fourth of its stores are poor, they will be closed
b)    it is closing up to one-fourth of its stores, which accounted for its poor sales
c)    it was closing up to one fourth of its stores because of poor sales.
d)    to be closing, on account of poor sales, up to one-fourth of its stores.
e)    having poor sales, such that up to one-fourth of its stores will be closed.

6.

Unlike the body’s inflammatory response to cuts and sprains, with widespread swelling and stiffness immobilizing the injured area until it heals, the body’s response to sunburn is more localized and resulting in a distinct line dividing affected and unaffected areas of the skin.

Ans: D, Why D use past perfect? A’s tense is wrong or right?
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A. with widespread swelling and stiffness immobilizing the injured area until it heals, the body’s response to sunburn is more localized and resulting
B. where the injured area is immobilized with widespread swelling and stiffness until it has healed, sunburn generates a more localized response in the body, which results instead
C. with the injured area immobilized by means of widespread swelling and stiffness until healing, sunburn generates a more localized response in the body, one resulting
D. in which widespread swelling and stiffness immobilize the injured area until it has healed, the body’s more localized response to sunburn results
E. in which widespread swelling and stiffness immobilize the injured area until healing, instead, the body’s more localized response to sunburn results

7.

By the same techniques used for genetically enhancing plants, making them disease- or pest-resistant, researchers have been able to increase the amount of protein in potatoes, sweet potatoes, and tobacco.
Ans: C they refer clearly or not ?

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A. By the same techniques used for genetically enhancing plants, making them
B. With the same techniques to genetically enhance plants, so that they are
C. Employing the same techniques used to genetically enhance plants so that they are
D. Employing the same techniques to genetically enhance plants, which makes them
E. Employing the same techniques for genetically enhancing plants that make them

偶选B,C,A,E.

请nn出场！

为什么4和5,  A不是正确答案呐?

为什么6 D 用过去完成时 ? A 时态对不对 ?

为什么7 C 中"They"指代 正确码 ?

Up ! 请NN !

第5题：

http://forum.chasedream.com/dispbbs.asp?boardid=23&replyid=115470&id=115470&page=1&skin=0&Star=1

第6题：D. in which widespread swelling and stiffness immobilize the injured area until it has healed, the body’s more localized response to sunburn results

这个现在完成时有点不明白哦。

第7题的c,they 指代有问题。

请nn们显身

忽然想起从小就被教育来历不明的食物不要吃。象这种来历不明的题该不该花时间研究呢？

希望楼主发贴时注明题目的出处。斑竹以为如何呢？

4．A) 从对称角度和意思上看，in 1997 they spent要比原来的好，且如（spend 钱）这样表达是可以的，但（spend 时间）可能就显得有点唐突，通常完整表达是spend 时间 doing/in..等

5．

A) they指代不清

B) accounted for意思有点不对，没有表达出原来的意思，且少that

C) 宾语从句中的that不能省, 除宾语从句本身是在另一从句(定语从句或是宾语从句)中。

D) 相比最优

E) announce to do非doing

6．A. with有夹心的味道，且the body’s inflammatory response和the body’s response不对称

B. the body’s inflammatory response和sunburn不对称

C. 同上

D. until后句子用完成时似乎也不少见

He waited until she had finished speaking.（longman）

'Can I go out and play now?' 'Not until you've done your homework.'

网上找来的句子

CD-Rom drive isn't recognized until Windows has loaded

Until one has loved an animal a part of one's soul remains unawakened

E. healing有问题，逻辑主语成了swelling and stiffness，且instead显得多余。BTW, A中的until it heals感觉应该没问题。

7．A) making夹心

B) 句式混乱

C) they指代前面就近的名词plants, 正确。

D) which无指代，不能指句子。

E) 这里for enhancing感觉不如to do或是象C中的形容词短语used; that修饰techniques同for enhancing在意思上有重复，表达不合理的感觉。