A. raising B. risk C. physiologically D. effect E. mentally

　　F. distinct G. average H. constant I. adds J. pregnant

　　K. educating L. suppress M. nerves N. relative O. adapts

　　Mothers who have complained through the centuries that their sons will be the death of them may be right — a study published in the journal Science shows having boys shortens a woman’s life span. Each son takes a(n) 1___G__ of 34 weeks off a woman’s life span, evolutionary biologist Samuli Helle and colleagues at the University of Turku found. On the other hand, having daughters 2___I__, but only very slightly, to a woman’s life span.

　　Helle and colleagues looked at birth and marriage records of Sami People(居住在北歐拉普蘭地區(qū)的人) from 1640 to 1870. “Our results suggest that giving birth to sons had a higher 3____N___ long-term survival cost for mothers than giving birth to and 4__A___ daughters,” they wrote. There could be biological reasons for this. Studies show boys are 5__C___ more demanding to produce — they grow bigger and faster in the womb(子宮), and some studies show it takes a woman longer to get 6___J__ again after having a son than after having a daughter. Testosterone(睪丸激素) produced by the fetus(胎兒) could 7__L___ the mother’s immune(免疫的) system and perhaps make her more reliable(易受影響的)to disease. There could be genetic or social differences among the Sami, who are 8___F__ from their Finnish and Swedish neighbors, Helle said. But he does not think so. “There is no reason to believe that this 9___D__ would be only visible in Sami people,” he said. “Generally, boys get on their mother’s 10___M__ more than girls because they are running around. On the other hand girls are more willing to help their mothers.”

　　1. So agony advisor Kristy says: “Do not suffer in silence.”

　　2. The good news is that depression can be successfully treated.

　　3. It can make it hard to cope with day-to-day living.

　　4. Nearly everyone moans about being depressed, after a bad day at school.

　　5. Depression is on the increase in teenagers, and suicide in teen boys is soaring.

　　6. At its most severe, it can even lead to suicide.

　　7. If you notice a friend suffering in silence, encourage them to talk.

　　8. But real depression is a serious condition that can last for ages

　　1. 據(jù)報道，有人設(shè)計出新型電腦游戲，不會對兒童行為有任何負面影響。(be reported that …, have … influence on …)

　　It is reported that new video games have been designed not to have negative influence on kids’ behavior in any way.

　　2. 當(dāng)意識到所有現(xiàn)有的機器已被新的設(shè)計所取代時，校領(lǐng)導(dǎo)發(fā)起脾氣來。(lose one’s temper, be replaced with …)

　　The head of the school lost his temper when he realized that all the existing machine had been replaced with new designs.

　　3. 史蒂文聽說他對新項目的提議被當(dāng)成荒謬之詞而遭到斷然否決，十分惱火。 (be upset to do …, be rejected as …)

　　Steve was very upset to hear that his proposal for the new project had been rejected as ridiculous.

　　4. 現(xiàn)代社會的孩子很難想像一個沒有電視和電腦的時代。(find it difficult to do …, conceive of)

　　The modern child finds it difficult to conceive of a time when there was no TV or Computer.

　　5. 面試官忘了問我現(xiàn)在老板的名字，他好像對細節(jié)不大感興趣。(neglect to do …, be concerned with)

　　The interviewer neglected to ask about the name of my present boss; he seemed not to be concerned with the details.