英语：广西2010年高三寒假总复习单项选择专练一

审核人：巧洁

21.There are _______ different species of cats.

   A. a few hundreds     B. a few hundreds of   C. a few hundred of  D. a few hundred

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

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

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

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

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

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

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

    A. being   B. was    C. to be    D. it’s