题目

以下有关细胞分裂的叙述中，正确的是（ ） A . 原核细胞只能通过无丝分裂增加细胞数目 B . 无丝分裂不出现纺锤丝和染色体的变化，故不发生遗传物质的复制和分配 C . 人的成熟红细胞可以进行有丝分裂，蛙的红细胞可以进行无丝分裂 D . 细胞核中的DNA不会随着细胞体积的扩大而增加是细胞不能无限长大的原因之一 第一节 完形填空 You’ve just finish you’re a-levels and you’ve got a place at university, but you’d really like a break from the academic world. Why not think about taking a year out? While most students go     1         from school to university, more and more people today are choosing to spend a year at “the university of life”  2      . There are lots of things to choose from. You could work in a bank or do community work. You might even do something challenging, such as  3      an exploration（探险）to the Amazon rainforest. The experience will  4      your horizons and teach you new skills. It may also give you the chance to earn some money, which will be very helpful when you  5      start your studies. If you are interested in taking a year out, you must make sure that the university will  6       your place for you till next year. Most are quite happy to do this,  7        they find that year-out students are  8        experienced, confident, and independent. But don’t forget: it’s a year out not a year  9        . Your university will want to know what you’re going to do. They won’t be very pleased if you just want to do _10        for a year. So what would do with a year out? (   ) 1. A. easily            B. simply             C. fast           D. straight (   ) 2. A. last              B. first               C. at last         D. at first (   ) 3. A. participating       B. joining            C. attending      D. expecting (   ) 4. A. broaden           B. spread            C. improve       D. raise (   ) 5. A. hopefully          B. willingly          C. eventually     D. happily (   ) 6. A. hold             B. leave             C. occupy        D. remain (   ) 7. A. however           B. though           C. as             D. when (   )  8. A. less             B. much             C. even           D. more (   )  9. A. in              B. off               C. away          D. through (   ) 10. A. nothing          B. something          C. anything       D. everything