先通读下面的短文,掌握其大意,然后在每小题所给的四个选项中,选出可以填入空白处的最佳选项。

After a long day at school, I walked home with my heavy schoolbag. Sleepy and _______, I threw my things on the sofa and took something from the kitchen to eat. I passed the living room and wished I could watch TV, but I knew my _______ would take me the whole night. I took my schoolbag and went _______ to my room. I tried to understand chemistry and fight with sleepiness at the same time. I tried to keep my eyes open and wanted something to cheer me up.

Later, I heard the sound of the front door opening. And I waited for it--- the sound of my mum singing. Though she sang off-key, it made me excited. I ran down to _______ my mum. We hugged each other and talked for a while. I liked it when my mum was happy. Her energy seemed to run down to me and I got the strength to _______ the stress again.

Sometimes, I wonder how my mum can still be ________ after coming back from work. Every weekday, she wakes up early in the morning to go to work and spends an hour on the bus. After work, my mum at times gets trapped in _______for two hours on her way home. When I _______ my school life with her work life, I should not be the one to _______. At least I have some interesting things to do at school. I notice that my mum lives her life with a joyous heart, which encouraged me to do my work well, _______ there may be difficulties. Seeing her happy makes me feel good too.

1.A. happy B. busy C. hungry D. crazy

2.A. dream B. supper C. homework D. experience

3.A. downstairs B. outside C. upstairs D. inside

4.A. interview B. greet C. thank D. help

5.A. face B. change C. make D. leave

6.A. creative B. active C. imaginative D. attractive

7.A. business B. traffic C. duty D. task

8.A. replace B. exchange C. connect D. compare

9.A. complain B. decide C. study D. play

10.A. since B. though C. until D. Because

阅读短文,根据短文内容回答问题。

It’s about Time

Do you know what time it is? If you do, you probably are looking at a clock or Long ago, people didn’t have clocks or watches like you do. When the sun rose, they got up and when the sun went down, they went to bed. They told timeby the position of the sun in the sky.

People discovered that they could use a stick and the sun to tell time. This was called a shadow clock. They put a stick in the ground, pointing straight up. The direction of the stick’s shadow and how long or shortit was told them the time.

A better kind of shadow clock was called a sundial. Sundial had a pointer and a base. The pointer cast a shadow on marks around the base. People could tell time by reading the marks.

But shadow clocks were not good for telling time on cloudy days or at night.

One kind of clock that didn’t need the sun was a water clock. A water clock was container with a tiny hole in the bottom. Water would steadilydropout of the hole. Marks on the inside of the container showed the time. It took one hour for the water to go down one mark.

Another kind of clock that didn’t need the sun was a candle clock. You would know the time by how much of the candle had melted(熔化). The candle had marks down its side to show the hours.

Sometimes people used candle clocks as alarm clocks. They put a nail(钉子)in the candle at the time they wanted to wake up, hanging a shoe on the nail. When the candle melted down, the nail fell outand the shoe hit the floor with a BANG! Now there are all kinds of timepieces, from tall grandfather clocks to watches we wear on our wrists(手腕). Most clocks run on electricity from batteries.

There are many more types of clocks, too. Clocks hang in and on buildings. Clocks are everywhere!

1.Did people have clocks or watches like you do long ago?

2.What did sundial have?

3. How long did it take for the water to go down one mark in water clock?

4.How would you know the time when you use a candle clock?

5.What does the writer want to tell us?

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