A. New ways have been found to affect aging.
B. Babies in the rich world will all live longer.
C. Present social care systems are poorly managed.
D. Aging populations are causing more challenges.
74. From the text we know that DAF-16.__
A. is a gene that is only found in worms
B. can make people live longer
C. has an effect on aging and immunity
D has been quite familiar to scientists
75. What can be the best title of the passage?___
A. Scientists Find Gene Linked to Aging
B. Population Aging Faster than Expected
C. How to Make People Live Longer
D. Gene Determines How Long We Live
第Ⅱ卷(共45分)
第一节:阅读表达(共5小题;每小题3分, 共15分)
阅读下面短文, 请根据短文后的要求进行答题(请注意问题后的字数要求)。
〔1〕The harmful effects on children were summed up last year in a report by the National Research Council and Institute of Medicine. Problems begin early, as the infants of depressed mothers cry more than other babies. They have greater fear of strangers and less tolerance for frustration. Starting in preschool and across all stages of childhood, they have more behavior problems at school and higher rates of depression and anxiety disorders.
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