“What we have found is that things like resistance and aging tend to go hand in hand，” May said in an interview.

　　May’s team compared longevity，stress resistance and immunity in four related species of worm.They also looked for differences in the activity of DAF 16 in each of the four species，and found that they were all quite distinct.

　　May said DAF 16 was active in most cells in the body and was very similar to a group of human genes called FOXO genes，which scientists believe play a role in the aging process.

　　“The fact that subtle (微妙的) differences in DAF 16 between species seem to have such an impact on aging and health is very interesting and may explain how differences in lifespan and related traits have arisen during evolution，” May said.

　　36．In which section may the text appear in a newspaper?

　　A．Education.　B．Science.

　　C．Entertainment.

　　D．Culture.

　　37．According to May，________.

　　A．resistance has a lot to do with aging

　　B．FOXO genes can be found in worms

　　C．genes play the same role in different species

　　D．new drugs will change the genes in older people

　　38．What can we know from the third paragraph?

　　A．New ways have been found to affect aging.

　　B．Babies in the rich world will all live longer.

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