13.After tracking the group for six years,researchers found that short sleep time had a high correlation with (mortality). A. health B. death rate C. longevity D. disease ...

7.Less commonly,they make mistakes with tragic (consequences). A. sequence B. concern C. influences D. results ...

1.The history of the Winter Games,however,has been even more troubled than that of the Summer Games.Until 1924 all the winter sports competitions,held every 4 years from 1901 to 1917 and again in 1992,had been in the Scandinavian countries-...

15.Everyone who eats in Carman's Country Kitchen in South Philadelphia knows that if you need a job,a place to stay or a friendly ear on a blue day,you come to Carman Luntzel.The six-foot,46 year-old powerhouse not only cooks,she also acts ...

9.Astronomers（天文学家） can tell just how hot the surface of the moon gets.The side of the moon toward the sun gets two degrees hotter than boiling water（沸水）.The night side reaches 243 degrees below zero（零度）.In an eclipse（月蚀）,...

3.And what a pity it was to (reconvert) the study,with all its space for Tim's farm records. A. change again B. remove completely C. give up immediately D. rebuild at once ...

11.Nature has a perfect system for recycling(循环) water. Water is used again and again. It falls as rain. Then it goes one of the three places. It might seep slowly through the soil as it soaks through into the natural reservoirs undergrou...

5.My father was 17 when he left the farm in Cameron,N.C., and set off for Baltimore to apply for a job at the Martin Aircraft Company. When asked what he wanted to do, he said,"Everything." He explained that his goal was to learn every job...

19.We need a chairman _______. A. for whom everyone has confidence B. in whom everyone has confidence C. who everyone has confidence of D. whom everyone has confidence on. ...

7.Wouldn＇t you rather your child _______ to bed early A. go B. went C. would go D. goes ...