1. If the young engineer didn’t have all these qualities, he could never have done what he has done or have the chance of succeeding in what he is trying to do.2. Cloning doesn’t necessarily make cells grow old, and can even act as a fountain of youth, say researchers who have been investigating a group of cloned calves.3. We often reach an impasse in our thinking, at that moment we are looking at a problem, and trying to solve it and it seems there is a dead end.4. The curriculum of the high school is similar to conventional school that provide preparation for college, complete with English, history, math and science, besides, all students are required to take performing arts and sports and provide a community service.5. In the Philippines, women were found to contribute about a third of households’ cash income, but 55 percent of household support if the economic value of their activities at home, such as growing food, or gathering hay to feed the family donkey, is included.
人们现在感到不满意，不是因为事情比以往更糟，而是因为比以往任何时候都好。以婚姻为例，在加利福尼亚，十对夫妇中有约六对离婚——在一些较富裕的社区这个比例还要高一些。必须承认，这些数字反映出许多不满。但人们从未像现在这样渴望和欢迎婚姻。的确，婚姻是如此地引人入胜，连很多正在办离婚的人几乎等不及法律许可，就想再度结婚了。
We must improve the farming method ______ we may get high yields.
A.therefore B.as. C.in order that D.if
John boasted that he could finish the job all by himself in no time.
A.at any moment B.in time C.on time D.very rapidly
The question ______ tomorrow is whether income tax should be increased.
A.to be debated B.to debate C.debated D.that it will be debated
It has been estimated that about one fifth to one third of the world’s farmable topsoil is being eroded at a rate that will seriously undermine future productivity.
A.stimulate B.weaken C.determine D.harness