问题 选择题

下列的实验操作不正确的是(  )

A.

将铁钉投入入竖直的试管中

B.

给试管中的液体加热

C.

挤压胶头清洗滴管

D.

用灯帽盖灭酒精灯

答案

A、铁钉放入试管的正确方法是:先把玻璃管横放,用镊子夹住铁钉送入试管底部,再慢慢竖起试管,故A操作错误;

B、给试管内液体加热时,试管内液体不可超过试管体积的

1
3
,试管与桌面成45°角,故B操作正确;

C、清洗滴管时,把滴管伸入清水中,并反复挤压,故C操作正确;

D、用灯帽盖灭酒精灯,是正确的,故D操作正确.

故选A

完形填空

Susan Boyle is a very        singer all over the world. She is 49 years old. Before she         famous, she was poor. She had        job and she was living alone in a small town in England. She looked shy(害羞)and didn’t dress       .

All these things changed after she came to a big show in Britain. In the show, people could show      special talents(才能).       , when she said she wanted to be famous as a singer, everyone laughed at her. But when she opened her mouth and began singing, all the people        laughing. Her voice was so wonderful that everyone lost themselves in it.

Now Susan has too many       . She is loved by everyone and she even took a trip to America. At the airport,        her fans from different places went to meet her and       , “We love Susan.”

小题1:A.popular             B.nice                 C.interesting

小题2:A.turned              B.became               C.got

小题3:A.an                  B.some                 C.no

小题4:A.good                B.well                 C.beautiful

小题5:A.they                B.theirs                  C.their

小题6:A.At first                B.At last              C.In the end

小题7:A.began               B.stopped              C.liked

小题8:A.fans                B.students             C.teammates

小题9:A.2 thousands         B.thousands of         C.a lot

小题10:A.said               B.talked               C.shouted

单项选择题 B1型题