又来问题了。。。

小吉要加油

怎么越做题越发现思维越来越不清晰了。。
At an enormous research cost, a leading chemical company has developed a manufacturing process for converting wood fibers into a plastic. According to the company, this new plastic can be used for, among other things, the hulls of small sailboats. But what does the company think sailboat hulls used to be made of? Surely the mania for high technology can scarcely go further than this.

18. The author’s opinion of the manufacturing process described in the passage is based primarily on the fact that

(A) plastic is unlikely to be durable enough for high-quality sailboat hulls

(B) the research costs of developing the process outweigh any savings possible from the use of the plastic

(C) a small sailboat is not normally regarded as a high-tech product

(D) hulls for small sailboats can be made from wood without converting it into plastic

(E) many other spheres of human activity are in far greater need of technological research

D

不太懂文章的意思，

The U.S. census is not perfect: thousands of Americans probably go uncounted. However, the basic statistical portrait of the nation painted by the census is accurate. Certainly some of the poor go uncounted, particularly the homeless; but some of the rich go uncounted as well, because they are often abroad or traveling between one residence and another.

Which of the following is an assumption on which the argument above depends?

(A) Both the rich and the poor have personal and economic reasons to avoid being counted by the census.

(B) All Americans may reasonably be classified as either poor or rich.

(C) The percentage of poor Americans uncounted by the census is close to the percentage of rich Americans uncounted.

(D) The number of homeless Americans is approximately equal to the number of rich Americans.

(E) The primary purpose of the census is to analyze the economic status of the American population.

C

感觉B的假设范围更大，C的话，如果RICH 和 POOR 的%一样，但是也许有第三方的影响，所以B更合理？

nomailman

第一题：
某化学公司对新科技很狂热，想了一个法子把木纤维转换成塑料，这种塑料可以用来做船的壳体。但船的壳体本身就是木纤维做的，所以把木纤维转换成塑料根本是没有必要的（况且还花费那么多的研发成本）。
作者认为这种对科技的狂热追求“太过了”。

小吉要加油

第一题：
某化学公司对新科技很狂热，想了一个法子把木纤维转换成塑料，这种塑料可以用来做船的壳体。但船的壳体本身就是木纤维做的，所以把木纤维转换成塑料根本是没有必要的（况且还花费那么多的研发成本）。
作者认为这种对科技的狂热追求“太过了”。

-- by 会员 nomailman (2012/3/17 10:22:35)

谢谢啦  ~~