11[.单选题]These()did unusually well in the contest,so the judges didn't know whom to give prize to.

　　A.woman singers

　　B.women singers

　　C.women singer

　　D.woman’s singers

　　[答案]B

　　12[.单选题]Man must stop()the earth's atmosphere.

　　A.filling

　　B.wasting

　　C.polluting

　　D.blackening

　　[答案]C

　　13[.单选题]We can't ()another 100 kilometers any more.

　　A.have

　　B.turn

　　C.make

　　D.reach

　　[答案]C

　　14[.单选题]Is Mary()to join in us?

　　A.supposed

　　B.exposed

　　C.supported

　　D.indicated

　　[答案]A

　　15[.单选题]I want to be told all().

　　A.which happen

　　B.which happened

　　C.that had happened

　　D.that had been happened

　　[答案]C

　　16[.单选题]We've all heard of Thomas Edison,()who invented the electric light and many other things.

　　A.man

　　B.a man

　　C.the man

　　D.men

　　[答案]C

　　17[.单选题]Don't tell me such things()you are not certain.

　　A.that

　　B.which

　　C.those

　　D.as

　　[答案]D

　　18[.单选题]()a microscope we can see different kinds of things that are unable to be seen by our naked eyes.

　　A.In terms of

　　B.In place of

　　C.By means of

　　D.By far

　　[答案]C

　　19[.单选题]Jackson went to work()his illness.

　　A.besides

　　B.even though

　　C.in spite of

　　D.although

　　[答案]C

　　20[.单选题]Anybody will do,()he is responsible for that.

　　A.as far as

　　B.so far as

　　C.as long as

　　D.as soon as

　　[答案]C