问题 选择题

科学的研究方法是取得成功的关键。下列关于人类探索遗传奥秘历程中的科学实验方法及技术的叙述,不正确的是[ ]

A.孟德尔在研究豌豆杂交实验时,运用了假说——演绎法

B.萨顿根据基因和染色体的行为存在平行关系,类比推理出基因位于染色体上

C.格里菲思利用肺炎(双)球菌研究遗传物质时,运用了放射性同位素标记法

D.沃森和克里克研究DNA分子结构时,运用了建构物理模型的方法

答案

答案:C

翻译题

完成句子。

阅读下列各小题,根据每句后的汉语提示,用句末括号内的英语单词完成句子.

1.Not only____________________languages but also at history and geography.(good)

他不仅擅长语言,并且历史和地理也很好.

2.Not once____________________a jump in the horse riding competition. (miss)

马术比赛中她从来没有错过一个障碍物.

3.Little____________________that she had already left. I had intended to treat her to a dinner.

(know)

对于她已离开我毫不知情.我原打算请她吃晚餐的.

4.No sooner____________________the station than she rushed towards the car that Peter took.

(arrive)

火车一到站,她就朝彼得开来的车跑去.

5.If he ____________________ advice, he wouldn't have lost his job.(take)

如果他采纳了建议,就不会丢掉工作了.

6.So____________________that I couldn't see the faces of people that were only three meters away.(dark)

天太黑了,以至于我连三米以外的人的脸都看不见.

7.Away____________________when he made a little noise in the grass.(fly)

他在草地上发出一点声音,鸟儿都飞走了.

8.Mr Johnson insisted that the problem worthy of attention____________________at the meeting.

(discuss)

约翰逊先生坚持要在会议上讨论这个值得注意的问题.

9.Tom is very easygoing and friendly; he is not ______________.(fear)

汤姆很随和、友善,他不应该被惧怕.

10.The lake is safe ____________________;it is not deep and the bottom is flat.(swim)

在这个湖里游泳很安全;它不深,湖底也很平坦.

单项选择题