临床医学研究中的保密原则（） A.欺骗、威胁、利诱进行医学临床实验违反了道德和法律

第二节完形填空（共20小题；每小题1.5分，满分30分）

　　阅读下面短文，从短文后各题所给的四个选项（A、B、C、D）中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。

　　I was about six when I started doing gymnastice.I 36 going into the school's gymnasium full of equipment,with the other kids rushing in ,anxious to 37 ,and the scent in the air.

　　I realized I wanted to get 38 with gymnastics when I watched the Olympics.When I saw those 39 use their bodies to gracefully throw 40 up in the air ,I was filled with admiration:It seemed that they could fly and I 41 myself flying like them.And when I finally tried,the 42 I got for that one 43 in the air was freedom,freedom from everything.It was a 44 ,and it was addicting.

　　I was crazy when I was little.I was the boy parents didn't want their kids 45 for fear that they would 46 what I did and get hurt.Parents thought I was 47 because I would try tricks that others of my 48 wouldn't.Some of my coaches said kids as old as me don't have the courage and ability to achieve the tricks I could. What most people didn't 49 were the hours I put into learning those tricks.I practiced every step 50 until I put them together and my hard work would 51 something great.

　　This hard work once stopped when I 52 ,and started at a new school.Everything there was 53 ,but the giggeset change was a lack of a gymnastics gym.

　　Now I've restarted training in a team I can learn from.As a little kid I could only 54 wide-eyed as the gymnast flew high in the air. 55 I'm older,it's my time to fly.

　　36.A.regret      B.remember      C.considered     D.avoided

　　37.A.enter       B.leave         C.meet          D.learn

　　38.A.serious     B.careful        C.busy          D.interested

　　39.A.dancers     B.fans          C.athletes       D.winners

　　40.A.others      B.themselves     C.everything     D.each other

　　41.A.enjoyed     B.found         C.set           D.imagined

　　42.A.feeling      B.lesson        C.courage       D.instruction

　　43.A.second      B.effort         C.circle        D.stop

　　44.A.bore        B.panic         C.high         D.trouble

　　45.A.around      B.among        C.above        D.away from

　　46.A.study       B.envy          C.notice        D.copy

　　47.A.bad        B.crazy          C.excellent      D.dangerous

　　48.A.place      B.age            C.time          D.size

　　49.A.explain     B.understand     C.realize        D.experience

　　50.A.now and then B.all theh time    C.over and over   D.little by little

　　51.A.go through   B.belong to      C.turn into       D.give way to

　　52.A.moved      B.changed       C.failed         D.finished

　　53.A.all right     B.the same      C.terrible         D.different

　　54.A.practice      B.watch       C.sigh            D.sit

　　55.A.Simply because B.Even though  C.As soon as     D.Now that

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下面哪几个是新闻组服务器（）。

A、news.nanhai.net.cn

B、www.cnnews.com

C、www.ask.com

D、news.neasE.net

E、ftp.downloaD.com

F、news.btA.net.cn

假设用户U1将对表SC的INSERT权限授予了U2，而U2又将其授予了用户U3。现要将U1对表SC的权限收回，请完成下列的SQL语句：
[12]
ON TABLE SC
[13]