Which of the following titles is most appropriate to the text?
A．Remembering Lessons Learned
B．How to Save Energy
C．In Search of Alternative Fuels
D．A Discussion of Global Warming

未分类题According to the text, the early warnings about smoking and the early warnings about global warming were similar because______.A．both were dismissed at first by those with vested interestsB．both ignored the underlying problemC．both failed to receive public supportD．both were successful in the end

未分类题The difference of stress-response behaviors between men and women is partially caused byA．the nature of both sexesB．the different social networksC．the secretion of certain hormonesD．the connection to nervous system

未分类题According to the passage, which of the following is one of the 'tend-and-befriend' behaviors?A．Quarrel with other family members.B．Travel alone to other countries.C．Give a hand to other people.D．Care about the children.

未分类题Which of the following leads to more hostile and aggressive behaviors?

未分类题The word 'base'(line 5, para. 2)most probably means '______'.A．basicB．ignobleC．honorableD．strange