SAT阅读法宝：逆向思维

原文：This little bit of time travel is possible because light takes  two million years to make the trip from there to here. Too bad we couldn't turn  things around and observe Earth from some cozy planets in Andromeda.

解析：原文说我们无法把时空翻转，在仙女星系中的某些行星上观察地球太遗憾了。利用逆向思维：做不到，很遗憾;能做到;甚好。答案很容易选到A。

例3(2007年1月)：The statement in lines 32-34 (“in 1962… information ”) suggests  that the

(A)  quality of the data surprised the scientists

(B)  evidence collected earlier was relatively untrustworthy

(C)  records had been lost for along time before scientists rediscovered  them

(D)  probe allowed scientists toformulate a completely new theory

(E)  data confirmed an obscure and implausible theory

原文：In 1962 the American probe Mariner 2 bypassed Venus at less  than 22,000 miles and gave us our first reliable information.

解析：原文说1962年，水手号探测器首次发回可靠信息。此处涉及一个时间节点，1962年是第一次，利用逆向思维，说明在此时间之前从未有过。故答案选到B。