Paula waited until all the luggage was cleared,__________ hers never appeared.

A.orB.soC.a(chǎn)sD.but

練習(xí)冊系列答案
相關(guān)習(xí)題

科目:高中英語 來源:2016屆廣東省深圳市高三第二次調(diào)研考試英語試卷(解析版) 題型:閱讀理解

Humans and many other mammals have unusually efficient internal temperature regulating systems that automatically maintain stable core body temperatures(核心體溫)in cold winters and warm summers. In addition, people have developed cultural patterns and technologies that help them adjust to extremes of temperature and humidity(濕度).

In very cold climates, there is a constant danger of developing hypothermia(低體溫), which is a life threatening drop in core body temperature to below normal levels. The normal temperature for humans is about 37.0°C. However, differences in persons and even the time of day can cause it to be as much as 6°C higher or lower in healthy individuals. It is also normal for core body temperature to be lower in elderly people. Hypothermia begins to occur when the core body temperature drops to 34.4°C. Below 29.4°C, the body cools more rapidly because its natural temperature regulating system usually fails. The rapid decline in core body temperature is likely to result in death. However, there have been rare cases in which people have been saved after their temperatures had dropped to 13.9-15.6°C. This happened in 1999 to a Swedish woman who was trapped under an ice sheet in freezing water for 80 minutes. She was found unconscious, not breathing, and her heart had stopped beating, yet she was eventually saved despite the fact that her temperature had dropped to 13.7°C.

In extremely hot climates or as a result of uncontrollable infections, core body temperatures can rise to equally dangerous levels. This is hyperthermia. Life threatening hyperthermia typically starts in humans when their temperatures rise to 40.6-41.7°C. Only a few days at this extraordinarily high temperature level is likely to result in the worsening of internal organs and death.

1.Why can humans keep stable body temperatures in different seasons?

A.Because their bodies are unusually efficient.

B.Because they experience different climates.

C.Because they can adjust to cultural patterns and technologies.

D.Because they have internal temperature regulating systems.

2.What does Paragraph 2 mainly discuss?

A.The dangerous effects of hypothermia.

B.The change of body temperature.

C.The survival of the Swedish woman.

D.The regulating systems of natural temperature.

3.People are unlikely to survive under the body temperature .

A.higher than 34.4°C B.lower than 29.4°C

C.between 40.6-41.7°C D.between 34.4-37°C

4.What is the best title for the passage?

A.Surviving in an ice trap

B.Getting to know hypothermia

C.Adapting to climate extremes

D.Changing core body temperature

查看答案和解析>>

科目:高中英語 來源:2015-2016學(xué)年安徽師范大學(xué)附中高二下期中考試英語卷(解析版) 題型:書面表達(dá)

書面表達(dá)

近年來,隨著電子書的普及,越來越多的人開始青睞電子書。但是電子書也存在著一些問題。請用英語寫一篇短文陳述你的觀點(diǎn),指出電子書存在的問題,并給出適當(dāng)?shù)慕鉀Q辦法。

注意:詞數(shù)100左右。

_______________________________________________________________

________________________________________________________________

________________________________________________________________

________________________________________________________________

________________________________________________________________

________________________________________________________________

查看答案和解析>>

科目:高中英語 來源:2016年北京市朝陽區(qū)高三一模英語試卷(解析版) 題型:單項填空

—My computer doesn't work!

—Robert is a computer expert.How I wish he __________ with me.

A.cameB.had come

C.is comingD.has come

查看答案和解析>>

科目:高中英語 來源:2016年北京市朝陽區(qū)高三一模英語試卷(解析版) 題型:單項填空

Parents often tell their children that they __________ take candy from strangers.

A.needn'tB.wouldn't

C.shouldn'tD.daren't

查看答案和解析>>

科目:高中英語 來源:2016屆四川省宜賓縣高三第一次適應(yīng)性測試英語(解析版) 題型:語法填空

閱讀下面材料,在空白處填入適當(dāng)?shù)膬?nèi)容(1個單詞)或括號內(nèi)單詞的正確形式。

The“selfie”is used to describe the self-taken photo,often from a smartphone.Someone takes about 10 selfies each time he does,and he only ends up___1.___(post)one or two of those.He picks the one that he feels make him look the___2.__(good).In that picture,he gains confidence.For that moment,everything bad or terrible that has happened to him___3.__(remove),because that smile is what gives him the___4.___(determine)to love himself.

I read__5.___poem recently and the young man said,“If I ask you__6.____you love,the answers will most likely roll off your tongue.You love to read.You love to write.You love your mom,you daughter,or your best friend.How long do you think you can go on and on before you say ‘I love___7.___(I)’?”

That statement hit me like a ton of bricks.I’ve struggled with confidence all my life.I still do.And in__8.___way am I saying that taking a selfie is a gateway___9.__confidence. __10.___,the selfie does deserve some credit for allowing individuals to express themselves.

查看答案和解析>>

科目:高中英語 來源:2016屆遼寧瓦房店市高三上期中考試英語(解析版) 題型:單句改錯

書面表達(dá)

假如你是李芳,你的美國好友Jane數(shù)學(xué)學(xué)得不好,對自己失去了信心,產(chǎn)生了厭學(xué)情緒。請你給她發(fā)一封電子郵件開導(dǎo)她,要點(diǎn)如下:

1.沒有必要過于傷心;

2.要振作起來,盡量減少焦慮心理;

3.和老師交流有助于你改善;

4.探索適合自己的有效學(xué)習(xí)方式。

注意:

l.詞數(shù)100左右。

2.可以適當(dāng)增加細(xì)節(jié),以使行文連貫。

Dear Jane,

___________________________________________________________________________________

___________________________________________________________________________________

___________________________________________________________________________________

___________________________________________________________________________________

___________________________________________________________________________________

___________________________________________________________________________________

Yours

Li Fang

查看答案和解析>>

科目:高中英語 來源:2016屆江蘇溧水高級中學(xué)高三下學(xué)期第三次模擬考試英語(解析版) 題型:單項填空

The successful candidate will be adaptable, take ownership of and develop in the role by taking initiative, being motivated and ________ high standards.

A. ensured B. to ensure

C. ensuring D. to be ensured

查看答案和解析>>

科目:高中英語 來源:2015-2016學(xué)年廣東湛江市高二下期第一次月考英語(解析版) 題型:閱讀理解

China news, Beijing, June 5 — The Horizon Research Group conducted a survey about Chinese parents and their children in May last year and this year. Based on a random sampling method, the survey, done in May last year, investigated about 1,095 people living in cities such as Beijing, Shanghai, Guangzhou, Xinjiang, Jinzhong, and Luzhou. All these people were aged between 18 and 60. The survey shows that 55.5% of the parents did not know who their children’s best friends were. Fathers, in particular, knew even less about their children than mothers, as the survey shows only 33.8% of fathers knew who their children’s best friends were while 50.8% of mothers did so, China Youth Daily reported.

Parents with little education were less concerned with their children’s life, or whom their children played with. The survey shows that among parents that graduated from primary schools or without any educational background, only 33.1% knew who their children’s best friends were. Among parents that had received middle school education, the related proportion reached 45.5%.

This year’s survey was also based on random sampling. In May 2007, the Horizon Research Group investigated some 1,456 families in Beijing, Shanghai, Guangzhou, Wuhan, Changsha, Xi’an, Chengdu and Harbin. The survey shows that children under the age of 12 play for less time with their playmates than their parents did when they were young.

The survey also shows that most children at present spend only 21.9% of their time playing with their friends, while their parents spent 36.8% of their time with their playmates when they were young. Nowadays, most children spend more time with their grandparents or babysitters than with their parents.

1.The article tells us that the two surveys show the following aspects EXCEPT that ______.

A. parents at present spend less time playing with their children than with the older generation.

B. some parents do not know their children’s best friends.

C. educated parents are more concerned about their children’s life than those with little education.

D. parents at present are concerned little about their children’s life.

2.The passage can be found in _________.

A. a magazine B. a newspaper

C. a science journal D. a school book

3.What can be inferred from the passage?

A. Parents need to take their responsibilities for their children.

B. Parents should provide better conditions for their children.

C. Parents don’t play an important part in the growth of their children now.

D. Parents should let their children have more friends.

查看答案和解析>>

同步練習(xí)冊答案