[讨论]求救3题！

（XDF）59

Electronic computer ships made of tiny silicon wafers now regularly contain millions of electronic switches. Unfortunately, electric switches that are this small cannot withstand intense radiation. M plans to produce a chip that, because it uses only microscopic mechanical switches, will be invulnerable to radiation damage. The switches will, however, be slower than electronic switches and the chip will contain only 12000 switches.

For there to be a market for M’s chip as a result of the apparent advantage describedabove, each of the following would have to be true…….

(d) Some devices in which computer chips will be used will have other components that will be able to function during or after exposure to radiation. (这个答案怎么解释为正确的？)

(XDF)105

Industrialists from country D were accused of promoting the D intervention in the A civil war merely to insure that the industrialists’ facilities in A made substantial profits during the war. Yet this cannot be the motive since, as the D foresaw. D’s federal expenses for the intervention were 8billion, whereas, during the war, profits from the D industrialists’ facilities in A totaled only 4billion.

问对第二句话的削弱？

（B）The largest proportion of D’s federal expenses is borne by those who receive no   significant industrial profits. (这个答案是怎么削弱的？和结论有什么关系？)

(XDF)325

According to a recent study, 15 corporations in the u.s. that follow a credo of social

responsibility are also very profitable. Because of their credos, these 16 corporations

give generously to charity, follow stringent environmental-protection policies, and have

vigorous affirmative-action programs.

Which of the following can be correctly inferred from the statement above?

(a)     Following a credo of social responsibility helps to make a corporation very profitable

(b)     It is possible for a corporation that follows a  credo of social responsibility to be very profitable.