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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
A. On Earth, among the surest indications of sunspot cycles are believed to be the rate that trees grow
B. On Earth, among the surest indications of sunspot cycles are, it is believed, the rate of tree growth
- On Earth, the rate at which trees grow is believed to be among the surest indications of sunspot cycles
- Among the surest indications on Earth of sunspot cycles, believed to be the tree growth rate
- 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？
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.
A. in which thin layers of extra paper are used to decrease the amount of oxygen entering the cigarette, thereby slowing
B. in which they use thin layers of extra paper in decreasing the amount of oxygen entering the cigarette, which slows
C. that uses thin layers of extra paper to decrease the amount of oxygen when it enters the cigarette, thereby slowing
D. for which thin layers of extra paper are used to decrease the amount of oxygen that enters the cigarette, and thereby slowing
E. 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。
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。 | 
