30. NASA began a(n)________　 of shuttle flights carrying live animals to space with the launch of Challenger flight STS 51B on April 28, 1985.

A. amount　　　 B. sum　　　 C. deal　　　 D. series

29. --- I think he is taking an active part in social work.

--- I agree with you ________.

A. on the way　　 B. in the way　 C. by the way　　 D. in a way

28. -- How many students are there in your class_______?

-- Forty-five. 　

A. at all　　 B. in total　　　 C. in the end　　 　D. in the total

27. _______ in some rural schools that the teacher is even unable to walk through the rows of desks.

A. The classroom is as crowded　 B. So crowded is the classroom

D. As crowded the classroom is　 D. The classroom is such crowded

26．Faced with trouble or difficulty，a person takes 　　　help that is available．

A．whatever　 B．whenever　 C．wherever 　　 　D．however

25. John may phone tonight. I don’t want to go out ________ he phones.

A. as long as　　 B. in order that　　 C. in case　　　 D. so that

24. Frank really doesn’t know how to _______ the matter.

A. do with　　 B. deal with　　 C. solve with　　 D. settle with

23. Do you believe ______ little boys could eat ______ much food.?

A. so; so　　 B. such; such　　 C. such; so　　　 D. so; such

22. I go 　　　to the stadium when there’s a game．But usually I watch it on TV．

A．typically　 　　B．anxiously　 　　　

C．frequently 　 D．occasionally

21. Let's go to _________ cinema - that'll take your mind off the problem for _______ while.

A. the; the　　 B. the; a　　　　 C. a; the　　　　 D. a; a