34.A new teachnique ?　 　the yields as a whole increased by about 30 percent.

A.had applied　　　　 　B.having applied　　 　C.to have applied　　 　D.having been applied

33. ?　 as we were by the enemy, we managed to march forward.

A.Surrounding　　　　 　B.Having surrounded 　C.Surrounded　　　 D.Being surrounded

32.It’s politely requested by the hotel management that radios ?　 　after 10 o’clock at night.

A.were not played　　 　　B.not to play　　　　 C.not be played　　 　D.did not play

31.Water, which seems to be so simple and common, is ?　 　makes life possible.

A.that　　　　　　　 　B.which　　　　　　 C.where　　　　　　 D.what

30.The press conference, originally due to be held last week, was finally ?　

because of the sudden war in the country.

A.set off　　　　　　　　 B.broken off　　　　 C.worn off　　　　　 D.called off

29.Clothing made of man ?　 made fibers has certain advantager over　　 made of natural fibers like cotton, wool or silk.

A.this　　　 　　　　　　B.one　　 　　　　　　C.that　　　　　　 D.what

28.Some women ?　 　a good salary in a job instead of staying at home, but they decided not to work for the sake of the family.

A.must make　　　　　 B.should have made　 C.would make　　　 D.could have made

27. I’d rather you ?　 　make any comment on the issue for the time being.

A.don’t　　　　　　　　 B.wouldn’t　　　　　 C.didn’t　　　　　 　D.shouldn’t

26.They conclude that ?　 　a planet only approximately like their own, life is almost certain to start.

A.to give　　　　　　　 B.to be given　　　　 C.given　　　　　　 D.give

25. -It is a long time ?　 　I saw you last.

-Yes. And it will be a time　 we see each other again.

A.when; when　　　　　 B.since; before　　　 C.before; since　　 　D.when; before