1. It is cruel to use living animals to do experiments.

   A. serious          B. friendly         C. cheap            D. very unkind

 2. There is a big table in the central part of this room.

   A. left             B. right            C. middle           D. up

 3. He only weighed 2 kilos at birth.

   A. when he died                         B. when he was born

   C. when he went to school               D. when he left school

 4. He has collected close to 200 stamps during his high school.

   A. nearly           B. more than        C. less than        D. at least