精品一区二区免费在线观看_国产精品久久久久久av福利软件_97成人精品区在线播放_国内成人精品一区

cool off 變冷 查看更多

 

題目列表(包括答案和解析)

Can you remember a morning when you’ve woken up to the ring of your alarm clock and wished you could stay in bed? You haven’t slept well, your hair is a mess. Worse, you can’t stop yawning. Yawning is universal to humans and many animals. Cats, dogs and fish yawn just like humans do! Yawning is an involuntary(無意識的,不自覺的) action during which you open your mouth and breathe deeply. The average duration of a yawn is about 6 seconds.
The purpose and cause of yawning are still a mystery. Scientists are not sure what causes a yawn. People yawn when they are tired or bored, but they also yawn when they aren’t. There are many ideas explaining why we yawn.
One idea is that yawning is a way for the body to become more alert by taking in more oxygen. A yawn increases the heart rate, forces carbon dioxide out of the lungs and blood stream, and brings oxygen to the brain. But one study showed that volunteers given a lot of oxygen did not yawn any less than before, while those given a lot of carbon dioxide did not yawn more.
Another idea is that early humans used yawning as a form of communication. If one decided it was time to sleep, they would tell the others by yawning and they would do it in return to show they agreed.
A third explanation comes from psychology professor Gordon Gallup of University at Albany in New York. He said that as people yawn, they cool off their brains. “Brains are like computers.” he said. “They only operate efficiently and effectively when they’re cool. Many things connected to yawning, like being tired, make the brain hot, and yawning can reduce the heat.”
Scientists have sent people into space, and created terrible nuclear weapons, but there are lots of seemingly simple things, such as why we yawn, or hiccup(打嗝), that they can’t figure out. Next time you are in class in the morning, let out a big yawn and watch to see how many of your classmates yawn in response!
【小題1】What’s the purpose of the description of how bad you may feel when you’re woken up in the morning?

A.To explain why humans yawn.
B.To explain how humans start yawning.
C.To lead into the topic of yawning.
D.To complain about being woken up by the clock.
【小題2】Which is not among the possible reasons for yawning mentioned in the passage?
A.A way to show that you feel hot.
B.A way to get rid of carbon dioxide.
C.A way to cool off your brain.
D.A way to communicate.
【小題3】In which situation are you likely to yawn?
A.When you feel frustrated.
B.The weather is hot.
C.Someone else yawns near you.
D.When you breathe in a lot of carbon dioxide.
【小題4】What can we learn from the passage?
A.The real reason why humans and most animals yawn.
B.Hiccups are an involuntary human action similar to yawns.
C.The more an action can be studied, the easier it is to research.
D.Finding out why humans yawn should be easier than sending people into space.

查看答案和解析>>

Dealing with a jealous friend isn’t easy. It can be very frustrating. Find out how to make the best of the situation, be fair to yourself and your friend, and, if possible, preserve the friendship. It can be done!

Try to find out why your friend is jealous. Is it something you said? Is it something you have little or no control over, such as your looks or your family? Is it something your friend should be supportive of, such as your grades or a special talent of yours? 

Once you know where the jealousy comes from, try to be empathetic: Imagine you're your friend or how you'd feel in the same situation.

Find out what your friend really wants to have. Do they wish they felt smarter or had more supportive parents? Maybe you can be helpful. Let them know that you believe in them and ask what you can do help them get what they want.

Try not to brag, show off or make things that would make your friend feel frustrated. This will only fan the flames of the jealousy.

Show that you're happy about your life, but be sure to show interest and excitement about things going on in your friend's life, too. Take some time to point out some of their unique strengths and good qualities.

Sometimes jealousy is mixed with a lot of anger. If your efforts to listen to your friend and encourage them aren't working, give them some time to cool off. They may need to work out their feelings alone or with someone who's not the object of their jealousy.

Call up some extra support for yourself, too. Another friend, a relative or a girlfriend/boyfriend may be able to help you sort out your feelings about being the object of your friend's jealousy. A lot of people feel bad about making someone else jealous, so be sure to remind yourself why you're a good person!

1.What’s the passage mainly about?

A.What you should do when your friend needs help.

A.How to make a close friend.

C.The best way to deal with a jealous friend.

D.how to deal with a jealous friend.

2.According to the author, dealing with a jealous friend        .

A.is an easy thing for everyone  B.is sure to damage the friendship

C.doesn’t need anyone’s help     D.may cause you to feel bad.

3.The first step for you to deal with a jealous friend is to        .

A.understand your friend’s feelings

B.show that you’re happy about your life

C.find out what your friend really wants to have

D.find out where the jealousy comes form

4.The underlined sentence in paragraph 5 probably means that      .

A.jealousy makes your friend unable to tell right from wrong

B.this will just make your friend more jealous

C.it is easy to put out the flames of your friend’s jealousy

D.you should help deal with your friend’s frustration

 

查看答案和解析>>

I heard the bees long before I saw them.

It was a very hot afternoon, and we decided to    21   in the river near my home. As we climbed down a small rocky hill toward the water, my boyfriend John    22   started to shout and then jumped into the water below. Peter and Mary quickly    23    but I was too far away to jump. I was    24  .

I heard a low hum, which was growing louder. From a    25  , the group of bees looked almost like a cloud of smoke. As it got closer, I realized it was actually thousands of bees flying towards me.

All I could do was    26   my face with my hands.    27  , I thought that if I sat very 28  , the bees would think I was just another rock.

After a few seconds, I knew my    29   had failed. The bees were attacking me. I could hear my friends shouting at me to get down.

But it wasn’t so easy. The only way I could    30   was to use my hands to climb down the rocks. However, I was afraid to do that at first because my face would be    31  .

The noise the bees made was so loud and    32  , and I had no choice.

I rushed down the rocks and jumped into the pool. I was just so happy to be free from the pain and the water felt so    33  .

But we still weren’t out of    34  . Every time we tried to climb out, the bees flew back over our heads. We spent the next three hours in the water until the bees finally lost    35  .

1.                A.call off         B.get off          C.cool off   D.turn off

 

2.                A.eventually      B.suddenly        C.happily   D.hurriedly

 

3.                A.climbed        B.followed        C.dashed   D.helped

 

4.                A.lost            B.forgotten        C.trapped   D.fooled

 

5.                A.hill            B.rock           C.river D.distance

 

6.                A.cover          B.hide           C.find D.lose

 

7.                A.Finally          B.Joyfully         C.Crazily    D.Immediately

 

8.                A.quietly         B.still            C.relaxed   D.gracefully

 

9.                A.face           B.friends         C.plan D.shout

 

10.               A.pass away       B.get away        C.look away D.take away

 

11.               A.exposed        B.unwanted       C.lost   D.protected

 

12.               A.annoying       B.frightening      C.amazing   D.boring

 

13.               A.wonderful      B.painful         C.hot   D.strange

 

14.               A.breath         B.control         C.danger    D.doubt

 

15.               A.hope          B.interest         C.time D.control

 

 

查看答案和解析>>

  Water goes around and around Earth in a never ending journey called the water cycle(循環(huán)). The sun heats up lakes, oceans, and other wet places on Earth. When the water gets warm enough, it changes into vapour. Plants also give off lots of water vapour. Some of this water vapour cools off high in the sky and becomes clouds. Then it falls back to Earth in a new place as rain or snow. This cycle happens over and over again.

 The ground can absorb water like a sponge (海綿). If you could see this groundwater, it wouldn’t look like a lake or river. The groundwater is mixed in with the rocks and sand that lie in layers(層) below Earth’s surface.

 Groundwater moves along slowly. How slowly? Maybe 1.5 kilometres in one century. Some of this water has been underground for thousands of years. And once groundwater is pumped out of the ground from a deep well(井) by people, it may take hundreds of years for another water to take its place.

In which order does water go around Earth?

   a .Fall down as rain or snow.  b. Heated up by the sun on lakes, oceans and other wet places.

   c. Cool off high in the sky.     d.  Form clouds.     e.  Change into vapour.

   A. dacbe                B. becda           C. caebd          D. bceda

The groundwater seems to________.

   A. be just on the ground        B. be pure water like that in a lake or river

   C. exist in rocks and sand       D. flow along like rivers or streams

The underlined word “pumped” in the passage can be replaced by________.

   A. run                       B. pushed            C. drawn             D. picked

What conclusion(結論) can we draw from the passage?

   A. Groundwater can be quickly replaced by other water once pumped out.

   B. Groundwater is very valuable.

   C. Groundwater has nothing to do with human beings.        

   D. Groundwater travel in an unknown way.

查看答案和解析>>

Water goes around and around Earth in a never ending journey called the water cycle(循環(huán)). The sun heats up lakes, oceans, and other wet places on Earth. When the water gets warm enough, it changes into vapour. Plants also give off lots of water vapour. Some of this water vapour cools off high in the sky and becomes clouds. Then it falls back to Earth in a new place as rain or snow. This cycle happens over and over again.
The ground can absorb water like a sponge (海綿). If you could see this groundwater, it wouldn’t look like a lake or river. The groundwater is mixed in with the rocks and sand that lie in layers(層) below Earth’s surface.
Groundwater moves along slowly. How slowly? Maybe 1.5 kilometres in one century. Some of this water has been underground for thousands of years. And once groundwater is pumpedout of the ground from a deep well(井) by people, it may take hundreds of years for another water to take its place.
【小題1】In which order does water go around Earth?
a .Fall down as rain or snow. 
b. Heated up by the sun on lakes, oceans and other wet places.
c. Cool off high in the sky.
d. Form clouds.
e. Change into vapour.

A.dacbeB.becdaC.caebdD.bceda
【小題2】The groundwater seems to________.
A.be just on the groundB.be pure water like that in a lake or river
C.exist in rocks and sandD.flow along like rivers or streams
【小題3】What conclusion(結論) can we draw from the passage?
A.Groundwater can be quickly replaced by other water once pumped out.
B.Groundwater is very valuable.
C.Groundwater has nothing to do with human beings.
D.Groundwater travel in an unknown way.

查看答案和解析>>


同步練習冊答案
精品一区二区免费在线观看_国产精品久久久久久av福利软件_97成人精品区在线播放_国内成人精品一区
亚洲精品日韩一| 国产综合一区二区| 欧美一区日本一区韩国一区| 日本 国产 欧美色综合| 精品少妇一区二区三区视频免付费 | www.av亚洲| 亚洲色图欧美激情| 欧美视频完全免费看| 免费av成人在线| 久久精品亚洲一区二区三区浴池 | 国产乱理伦片在线观看夜一区| 亚洲国产精品二十页| 91麻豆免费观看| 亚洲妇熟xx妇色黄| 精品国产一区二区三区av性色| 国产成人8x视频一区二区| 中文字幕不卡在线| 日本韩国一区二区| 蜜桃视频免费观看一区| 久久九九影视网| 色综合天天性综合| 青草国产精品久久久久久| 久久综合精品国产一区二区三区 | 奇米一区二区三区av| 国产亚洲精品精华液| 色婷婷久久一区二区三区麻豆| 午夜av一区二区| 国产无一区二区| 欧美亚洲图片小说| 韩国一区二区在线观看| 成人免费在线视频| 欧美一区中文字幕| www.日韩av| 免费观看在线色综合| 久草精品在线观看| 国产精品国产自产拍高清av王其 | 欧美一区二区三区人| 福利电影一区二区| 亚洲成人av电影| 国产日韩欧美在线一区| 欧美午夜精品一区| 国产91丝袜在线播放| 午夜视频一区在线观看| 久久久欧美精品sm网站| 欧美最猛性xxxxx直播| 国产一区不卡视频| 亚洲线精品一区二区三区八戒| 久久综合视频网| 欧洲一区二区三区免费视频| 精品亚洲国产成人av制服丝袜 | 亚洲一区免费在线观看| 久久综合九色综合欧美98| 在线视频一区二区三区| 国产一二三精品| 亚洲国产日日夜夜| 国产精品久久久久久久第一福利| 欧美一三区三区四区免费在线看 | 91国模大尺度私拍在线视频 | 美女国产一区二区三区| 亚洲精品中文在线观看| 国产亚洲精品bt天堂精选| 欧美精品亚洲二区| 91蜜桃婷婷狠狠久久综合9色| 狠狠网亚洲精品| 视频一区二区三区在线| 亚洲情趣在线观看| 久久久久国产一区二区三区四区| 欧美日本一道本| 91免费版pro下载短视频| 国产精品77777竹菊影视小说| 视频一区中文字幕| 波多野结衣中文字幕一区二区三区 | 国产一区不卡视频| 日本免费新一区视频 | 亚洲一区二区三区四区中文字幕 | 亚洲国产精品成人久久综合一区 | 亚洲免费观看在线观看| 国产欧美综合在线观看第十页| 91精品国产综合久久婷婷香蕉| 91久久人澡人人添人人爽欧美 | 欧洲精品中文字幕| 91在线视频官网| 高清成人在线观看| 国内精品伊人久久久久av影院| 日产精品久久久久久久性色| 亚洲自拍欧美精品| 亚洲黄网站在线观看| 国产精品乱人伦一区二区| 久久久欧美精品sm网站| 日韩欧美高清一区| 91麻豆精品国产91久久久 | 免费的国产精品| 午夜精品久久久久久久99水蜜桃| 亚洲精品写真福利| 亚洲另类在线一区| 亚洲色图色小说| 亚洲视频在线一区| 中文字幕在线不卡一区| 国产精品久久久久一区| 中日韩av电影| 国产精品视频你懂的| 亚洲国产高清aⅴ视频| 国产亚洲午夜高清国产拍精品 | 一片黄亚洲嫩模| 亚洲激情六月丁香| 一二三区精品福利视频| 亚洲综合在线观看视频| 一个色综合网站| 亚洲国产色一区| 无码av中文一区二区三区桃花岛| 亚洲成av人片www| 日韩精品五月天| 免费在线观看日韩欧美| 久久精品国产一区二区三区免费看| 男女性色大片免费观看一区二区| 免费国产亚洲视频| 精品写真视频在线观看| 国产精品99久久久久久久vr| 国产成人精品一区二区三区四区 | 91小视频免费观看| 色哦色哦哦色天天综合| 在线观看91视频| 欧美午夜理伦三级在线观看| 欧美日韩三级视频| 日韩一级二级三级精品视频| 精品人伦一区二区色婷婷| 久久精品一区二区三区不卡| 国产精品欧美一级免费| 亚洲美女淫视频| 亚洲成在线观看| 麻豆成人91精品二区三区| 国产精品自拍在线| av电影在线观看一区| 在线观看中文字幕不卡| 4438成人网| 久久看人人爽人人| 日韩毛片在线免费观看| 一区二区三区国产| 蜜臀av一级做a爰片久久| 国产传媒欧美日韩成人| 91麻豆自制传媒国产之光| 欧美日韩国产一二三| 欧美mv日韩mv| 国产精品福利av| 亚洲18影院在线观看| 国产在线精品一区二区夜色| caoporm超碰国产精品| 欧美日韩三级一区二区| 精品国产一区二区三区久久久蜜月| 欧美激情在线看| 亚洲午夜在线观看视频在线| 麻豆免费精品视频| 成人avav影音| 777午夜精品免费视频| 久久精品在这里| 一区二区三区精品视频在线| 老鸭窝一区二区久久精品| 成人性生交大片免费看在线播放| 在线观看免费成人| 欧美精品一区二区三区久久久| 亚洲视频电影在线| 日本欧美韩国一区三区| 成人一区二区三区| 欧美日韩国产免费一区二区| 久久久国产一区二区三区四区小说| 亚洲欧美国产77777| 久久精品国产亚洲高清剧情介绍| 北岛玲一区二区三区四区| 91精品一区二区三区久久久久久 | 91麻豆成人久久精品二区三区| 日韩一区二区免费在线观看| 中文字幕的久久| 日本三级亚洲精品| 99久久精品免费精品国产| 日韩视频永久免费| 亚洲免费资源在线播放| 久久99热狠狠色一区二区| 色一情一伦一子一伦一区| 精品美女在线播放| 亚洲综合色视频| 成人中文字幕合集| 日韩一级免费一区| 一区二区三区不卡视频| 国产精品亚洲视频| 91精品一区二区三区在线观看| 亚洲欧洲国产日本综合| 狠狠色综合日日| 欧美日韩一卡二卡三卡| 国产色产综合色产在线视频| 丝袜美腿高跟呻吟高潮一区| 成人精品一区二区三区四区| 欧美一区二区三区日韩| 一区二区三区日本| 成人动漫一区二区三区| 欧美成人艳星乳罩| 五月天欧美精品| 91麻豆蜜桃一区二区三区| 久久精品人人做人人爽人人| 日本女人一区二区三区| 在线观看不卡一区|