1.There are _______ different species of cats.

　　A. a few hundreds B. a few hundreds of

　　C. a few hundred of D. a few hundred

　　2. I tried to ______ in my speech we were all grateful for his help.

　　A. speak B. tell C. express D. convey

　　3. There is no _______ to be gained from endlessly discussing whose fault it was.

　　A. use B. consequence C. profit D. effect

　　4. The cancer risks _____ with smoking have been well proved.

　　A. combined B. associated C. caused D. joined

　　5. The new law was generally admitted _______ difficult to carry out.

　　A. being B. was C. to be D. it’s

　　6. We ________ have proved great adventurers, but we have done the greatest march ever made in the past ten years.

　　A. may not B. needn’t C. shouldn’t D. mustn’t

　　7. My brother was against my suggestion while my sister was _____ it.

　　A. in honor of B. in search of C. in favor of D. in the charge of

　　8. In peace, too，the Red Cross is expected to send help _____ there is human suffering.

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

　　9. ―― I knocked over my coffee cup. It went right over ______ keyboard.

　　―― You shouldn’t put drinks near _______ computer.

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

　　10. Output is now six ________ it was before liberation.

　　A. what times B. times what C. times of which D. which times

　　答案：1-5 DDCBC 6-10 ACBCB