题目

有丝分裂正常完成后，在两个子细胞中数量完全相等的是 A、RNA          B、DNA            C、染色体      D、蛋白质 答案：C 解析: 略  Mr Black was over fifty years old. He sometimes made some mistakes in his work,and he lost his work. So he had 1 time every day to do something. Then he often met his old friends under a big tree. They had drinks there and 2 anything they liked.  One day,some old men were sitting together again and talking about young people in this world. They all agreed that old people were 3 than young people. Then one of the old 4 said that young men were stronger than old men.5 of them agreed that this was true, 6 Mr Black didn't. He said, "No. I am as strong now as when I was a young man.”His friends were surprised 7 what he said.  "Well," said Mr Black, "near my house there is a big stone. When I was a young man, I used 8 to move it,but I couldn't, because I was not 9   . I am an old man now, and when  I try to move it,I still 10   . So,I am as strong as when I was young."(   ) 1. A. many    B. a lot    C. lots of    D. lot(   ) 2. A. talked for    B. talked to    C. talked with    D. talked about(   ) 3. A. clever    B. cleverer    C. cleverest    D. a clever(   ) 4. A. man    B. woman    C. men    D. women(   ) 5. A. All    B. None    C. Both    D. Neither(   ) 6. A. so    B. or    C. and    D. but(   ) 7. A. at    B. to    C. of    D. on(   ) 8. A. trying    B. try    C. to try    D. to trying(   ) 9. A. strong enough    B. enough strong    C. weak enough    D. enough weak(   ) 10. A. can    B. can't    C. could    D. couldn't