问题 填空题

(1)小红同学用天平测物体的质量时,先将天平放置在水平桌面上,然后再进行如下调节:①_____;②_____

(2)在进行第②步调节时,发现指针指在分度盘的左侧,如图所示,此时应将天平右端的螺母向_____调节.(填“左”或“右”)

答案

(1)①将游码移至横梁标尺左端的零刻度线;②调节平衡螺母,使指针对准分度盘的中央红线或左右偏转的格数相同.

(2)右.

阅读理解

Good morning, class!

We know that there are too many net bars around us. The Internet is popular and it makes our lives colorful. Many of us like going online very much because we can learn how to use the computer and get more information from the Internet. We can learn English. We can read some good newspapers and magazines. It can make us clever in playing computer games. We can send E-mails to our friends quickly. We can chat(聊天) freely online with our friends. It can help us get in touch with people from all over the world.

But some students spend too much time in playing computer game and some stay in the net bars all day and all night. Teenagers even get to have boyfriends or girlfriends online. They write too many letters to each other. It takes them too much time to chat online so they do worse and worse in their lessons and they don’t study well any more. I think we mustn’t get online when it is time for us to study. We can do it in summer or winter holidays. We should get online with adults(成人)--our teacher or parents.

At the same time, if we have lots of free time, we can do some out-of-class activities at school. We usually have activities from 4:50 to 5:50 in the afternoon. We have different kinds of activities. If you are interested in sports, you can play basketball or football. We can go to the English Corner. We can practice talking in English there. We hope we can spend more time on our subjects or on such activities that we can learn a lot from and less time on the Internet.

Thank you for listening to me. That’s all.

小题1:The short passage is about __________.

A.going online

B.how to communicate with others

C.how to spend our free time

D.different kinds of activities小题2:The Internet can make our lives _________.

A.helpful and important

B.enjoyable and interesting

C.enjoyable but expensive

D.different kinds of activities小题3:________ is not good.

A.Sending E-mails

B.Reading newspapers and magazines online

C.going online with adults

D.Spending all day in the net bars小题4:Playing computer games________.

A.gives us lots of information

B.makes our studies worse

C.makes us more clever

D.is harmful to our health小题5:Which of the following is NOT right?

A.There are too many net bars in the cities.

B.We can learn English from the Internet.

C.We mustn’t get online when we are studying at school.

D.We cannot do out-of-class activities from 4:50 to 5:50 p.m.

选择题