4.①Scientists _______　 _____the positive effect of laughter　　 (at/ on )physical and mental health.

②All the students _______ ________ _______(确信)his honesty.

3.①In 2008, all attention will ____ _______ ______(聚焦于) Beijing.

②However amusing the story is, I have to put it away and _____ _____ ______ (集中精力于)study this week.

2.①_________________因此/结果, they can cause serious pollution, which does great harm to our surroundings.

②They have increased the number of staff and ______ (因此)天河service is better.

1.①Therefore, I hope you can _____ _____ and be yourself, ______ that you can succeed. 因此，我希望你能振作起来，做你自己，相信你能够成功。

②________________(这是我们的信条) that improvements in health care will lead to a stronger, more prosperous economy.

③The conditions they are living are _______ _________. (难以置信)

30. The day we were looking forward to ____________(come) at last.

三维设计“必会”基础知识过关测试(二十六)　　　　　　　　

29. _____________________________________________________. 那本书难懂。

28. You can see it ________ your own eyes.　 你可以亲眼看看它。

27. The reason ________ he was absent from the party was ________ he had to write the graduation paper. 他没有去参加宴会的原因是他必须写一篇毕业论文。

26. If you don’t ________ ________ ________, go to be sorry one day. 如果你不听我的劝告，总有一天你会后悔的。

25. We’re ________ a cold winter. 我们预料会有一个寒冷的冬天。