题目

基因治疗是指（ ） A．对有基因缺陷的细胞进行修复，从而使其恢复正常，达到治疗疾病的目的B．把健康的外源基因导入到有基因缺陷的细胞中，达到治疗疾病的目的C．运用人工诱变的方法，使有基因缺陷的细胞发生基因突变恢复正常D．运用基因工程技术，把有缺陷的基因切除，达到治疗疾病的目的 完形填空。      Like most people, I was brought up to look upon life as a process of getting. It was not until in my late thirties that I made this important   1  : giving-away makes life so much more exciting. You need not worry if you   2   money.      his is how I   3   with giving-away. If an idea for improving the window display of a neighborhood store   4   to me, I step in and make the suggestion to the   5  . If an accident takes place, the   6   of which I think the local police could use, I   7   him up and tell him about it, though I am not in   8   here. One discovery I made about this world is to give   9   getting something back, though the   10   often comes in an unexpected form.      One Sunday morning the local post office delivered an important special letter to my home, though it was   11   to me at my office. I wrote the postmaster a note of   12  . More than a year later I needed a post-office box for a new business I was  13 . I was told at the window that there were  14   boxes left, and that my name would have to go on a long  15  list. As I was about to  16   the post office, the postmaster appeared in the   17   ."Wasn't it you that wrote us that letter a year ago about delivering an  18  delivery to your home?" I said it was."Well, you certainly are going to have a box in this post office   19   we make one for you. You don't know what a letter like that means to us. We  20  get nothing but complaints." (     )1. A. decision   (     )2. A. earn        (     )3. A. experienced (     )4. A. happens    (     )5. A. customer    (     )6. A. story      (     )7. A. call        (     )8. A. need        (     )9. A. plus        (     )10.  A. process  (     )11.  A. replied  (     )12. A. invitation(     )13. A. dealing  (     )14. A. enough    (     )15. A. admitting (     )16. A. leave    (     )17. A. window    (     )18. A. unfamiliar(     )19. A. in case  (     )20.  A. even      B. research    B. lack        B. connected  B. occurs      B. headmaster  B. damage      B. hold        B. trouble    B. without    B. goal        B. addressed  B. apology    B. providing  B. some        B. relating    B. shout      B. doorway    B. unexpected  B. now that    B. hardly      C. speech    C. spend      C. cooperated C. sticks    C. storekeeperC. challenge  C. break      C. common    C. for        C. return    C. driven    C. complaint  C. applying  C. no        C. examining  C. guess      C. home      C. unknown    C. even if    C. usually    D. discovery          D. steal              D. agreed             D. leads              D. policeman          D. material           D. pick               D. charge             D. before             D. concern            D. brought            D. appreciation       D. starting           D. more               D. waiting            D. act                D. yard               D. uncertain          D. as if              D. rather