请高手们帮忙看看这几道题(GWD)

GWD-11-Q26:

On Earth, among the surest indications of sunspot cycles are believed to be the rate that trees grow, as seen in the rings visible in the cross sections of their trunks.1 同主

1. On Earth, among the surest indications of sunspot cycles are believed to be the rate that trees grow


2. On Earth, among the surest indications of sunspot cycles are, it is believed, the rate of tree growth


3. On Earth, the rate at which trees grow is believed to be among the surest indications of sunspot cycles
   



4. Among the surest indications on Earth of sunspot cycles, believed to be the tree growth rate


5. Among the surest indications on Earth of sunspot cycles is believed to be the rate at which trees grow

   Answer:

后面这个as seen in明明是不能ｒａｔｅ作主语啊。　但我只能选这个其他的感觉不对。谁给讲讲后面这部分？　偶的答案对不？

GWD-11-Q28:

In an effort to reduce the number of fires started by cigarettes, a major tobacco company is test-marketing a cigarette in which thin layers of extra paper are used to decrease the amount of oxygen entering the cigarette, thereby slowing the rate at which it burns and lowering the heat it generates.

1. in which thin layers of extra paper are used to decrease the amount of oxygen entering the cigarette, thereby slowing


2. in which they use thin layers of extra paper in decreasing the amount of oxygen entering the cigarette, which slows


3. that uses thin layers of extra paper to decrease the amount of oxygen when it enters the cigarette, thereby slowing


4. for which thin layers of extra paper are used to decrease the amount of oxygen that enters the cigarette, and thereby slowing


5. using thin layers of extra paper in decreasing the amount of oxygen entering the cigarette, which slows

   Answer: 上面是偶得答案　求证。

GWD-9-Q15

Dressed as a man and using the name Robert Shurtleff, Deborah Sampson, the first

woman to draw a soldier’s pension, joined the Continental Army in 1782 at the age of 22,

was injured three times, and was discharged in 1783 because she had become too ill to

serve.

A. 22, was injured three times, and was discharged in 1783 because she had become

14

B. 22, was injured three times, while being discharged in 1783 because she had

become

C. 22, and was injured three times, and discharged in 1783, being

D. 22, injured three times, and was discharged in 1783 because she was

E. 22, having been injured three times and discharged in 1783, being

Answer:ａ　？　这个是老官的大案。但是为什么在两个分句间要加逗号？　同主语应该去掉逗号阿？　我被迫选了ｂ　

请指正。

    第一题我在C和E之间摇摆，最后选了C，第二题我选C

    第一题：A，B的are错，D结构不完整，E的意思似乎不太对，among...is believed to be意思不对

    第二题：主要问题是A和C，我觉得A中的in which意思不如C中的that uses意思来得恰当

    没有标准答案吗？

上面两道没有标准答案。又加了一道有老官的说法。

再次请教

    那个题目我选A，

    A结构很明显，sb joined..., was injured..., and was discharged...

偶的选择如下:

Q26 C

Q28 A

3. A没错 逗号在AND前很常用,有时候表示有前后时间顺序的时候就可以

support.

26-C

28-A. C is wrong because we can say 'sb use sth to do...', but cannot say ' sth use sth to do...'

      有道理！！谢谢！！选A

yes!  thanks