题目内容

Michael was playing basketball with his friends _____ his brother was listening to music.

A.after B.while C.before D.because

练习册系列答案
相关题目

Why is that many teenagers have energy to play computer games until late at night， but can't find the energy to get out of bed in time for school？ According to a new report， today's teenagers are getting so little sleep but their health is in danger．

This raises serious questions about whether being short of sleep is influencing children's ability to pay attention at school． Research has shown that losing even just half an hour's sleep at night can have deep influences on how children perform the next day．

So why aren't teenagers getting enough sleep？Some experts suggest that televisions， computers and mobile phones in children's bedrooms may cause problems．Instead of reading a book at bedtime，children are playing computer games，surfing the web，sending messages， or watching television．As these new pre-sleep activities have become more common，more traditional ones such as reading have become less，Dr．Luci Wiggs，a researcher at Oxford

University's Section of Child and Adolescent Psychiatry said，“One of the problems with these pre-sleep activities is that they do not have clear start and end times which leads to being short of sleep．”

Research has shown that teenagers have different sleep patterns from adults．Human bodies produce melatonin（褪黑激素）to help fall asleep． Most adults start to produce melatonin at

about 10 pm，while teenagers only begin to produce it three hours later．It is possible that this delay in melatonin production is caused by the behaviors of teenagers such as playing with phones late at night．

Problems about sleep- who needs how much and when -are usually connected to students' achievements． But modern brain researchers say it is time that more schools wake up to both biological and social facts and make a better timetable for their teenager students．

1.What can we learn from Paragraph 2？

A.It's very common for teenagers to have less sleep．

B.It doesn't matter if children sleep half an hour less．

C.Being short of sleep has influence on children．

D.A good night sleep at weekends helps children study well．

2.According to Dr．Luci Wiggs，．

A.too many pre-sleep activities take up teenagers' sleeping time．

B.playing computer games before bedtimes does harm to health．

C.fewer and fewer children read books at bedtime today．

D.teenagers shouldn't watch TV before they go to sleep．

3.What does the underlined word 'delay' mean？

A.Rushing． B.Changing． C.Putting off． D.Cutting off．

4.What can we infer from Paragraphs 4 and 5？

A.Schools need to offer more biology classes．

B.Teenagers may be kept awake by themselves．

C.Melatonin influences teenagers' achievements．

D.It's necessary for schools to start classes later．

5.Which can be the best title for this passage？

A.Wake Up Sleeping Teenagers

B.Let Sleeping Teenagers Lie

C.Keep Away From Electronic Products

D.How to Sleep

Do you have friends or relatives who live in other parts of China? For example, maybe you live in Beijing, but you have cousins in Chongqing. But luckily, if you want to call them on the phone or do a video chat with them, you don’t have to worry about which time zone you are in. This is because almost all of China follows a single standard time.

But some countries have many different time zones. For example, the US alone has five different time zones. My hometown New York is in the Eastern Time Zone. But my friends in California are in the Pacific Time Zone, which is three hours behind my time zone. So, if I want to call them, I have to plan with them ahead of time to make sure we are both free at the same time.

Actually, there is one exception (例外) in China: the Xinjiang Uygur autonomous region (新疆维吾尔自治区). In this region, people either follow Beijing Time - the time that the rest of the country follows - or Xinjiang Time, which is about two hours behind Beijing Time. People in Xinjiang have to be clear whether they are using Xinjiang Time or Beijing Time when making plans with each other.

For the first year I lived in China, I would often get phone calls from my mother very late at night because she forgot to consider the time difference. My hometown is exactly 12 hours behind China time! But by now, my family, friends and I have gotten used to the difference.

1.There are ________ time zone(s) in America.

A.one B.two C.five

2.The writer has to make a plan with friends in California before calling because ________.

A.they are both free

B.they are at the same time

C.they are in different time zones

3.The underlined word “consider” means ________.

A.认为 B.关心 C.考虑

4.Which of the following is TRUE?

A.All of China follows a single standard time.

B.People in Xinjiang can choose the time they use.

C.It is 10:00 in New York when it is 12:00 in California.

5.The best title for this passage is ________.

A.Learn to Save Time

B.Make Plans before Calling

C.Different Countries, Different Times

Please be ___________ (小心的) when you cross the street.

Spiders, bats, black cats and more…. Let’s see what Halloween has in store!

Halloween Party

Sunday. Oct, 26 8:00 am-10:00 pm

Food & Drink 587 Rose Road

Please reply to Ted, Steve and Brown at 211-8389

Costumes and children are welcome!

A new app—Shai Shufang

★Help sort your books in different classes.

★Share book lists with your friends.

Let you know what books are popular right now.

You can add any new book into your shopping list.

Please click http://www.Shaishufang.com to download the app.

Lost Dog! Please Help!

Name: Cookie Age: 6 weeks old

Hair: Brown Eye color: Black

Boy/Girl: Girl Location: 259 Tongshi Road

Lost around 8 am on June 5, 2017

REWARD(报酬): $300

Please contact with any information: Julia: 987-8647 Lisa: 984-6364

Notice

There will be a meeting on Chinese Traditional Culture

by Professor Wang Dong from Beijing University.

In the fifth building Classroom 906.

On June 16, 2017, at 9:00 am.

The Chinese Language Department, Yanti University June 13.2017

根据短文内容，选择最佳选项，并在答题卡上将选定答案的字母标号涂黑。

1.The Halloween party will be held _____.

A.on June 5 at 587 Tongshi Road

B.on October 26 in the fifth building

C.on October 26 at 587 Rose Road

D.on June 16 at 259 Tongshi Road

2.If Jack downloads the ShaiShufang app, he can _____.

A.know the popular books immediately

B.see what Halloween has in store

C.contact some information with Julia

D.take part in the meeting about culture

3.The dog Cookie _____.

A.was lost 6 weeks ago B.has brown eyes

C.has black hair D.is a girl

4.The meeting held by Professor Wang Dong is on ______.

A.a new app-Shai Shufang B.Chinese Traditional Culture

C.foreign Language Research D.Chinese Traditional Language

5.From the passage, we can know _____.

A.the Halloween Party will last for 16 hours

B.app users can only add popular books into his or her shopping list

C.the person who finds the lost dog will be rewarded $300

D.professor Wang Dong is from Yantai University

The story was so _____ that we couldn’t help laughing.

A.boring B.difficult C.terrible D.funny

1.The material is probably from .

A.an animal hospital B.a pet supermarket C.a rescue center D.a pizza shop

2.If we want to use this coupon, we should at least（至少）pay .

A.$5 B.$20 C.$25 D.$30

3.What can we know about the coupon?

A.It is used to shop online. B.It can only be used in the supermarket.

C.It can help us save some money. D.It can make our shopping more comfortable.

4.We can use this coupon to .

A.buy pet food B.buy animals C.receive treatment D.pay instead of money

5.Tom buys something online, he should .

A.print the coupon B.show it on his smart phone

C.go to the supermarket the next day D.enter code 13732 WEB at checkout

对很多人来说，这首音乐很值得再听一遍。

__________________________________________________________________

Many music fans have expressed their love for her_____musical style. [ju??ni?k]

违法和不良信息举报电话：027-86699610 举报邮箱：58377363@163.com

精英家教网