问题 选择题

下列反应中,在高温下不能自发进行的是(  )

A.CO(g)C(s)+O2(g)

B.NH4Cl(s)NH3(g)↑+HCl(g)↑

C.(NH4)2CO3(s)NH4HCO3(s)+NH3(g)

D.MgCO3(s)MgO(s)+CO2(g)

答案

答案:A

A、B、C、D都是分解反应,为吸热反应;A项不是熵增的反应,在高温下不能自发进行。

阅读理解

阅读短文,选择正确答案。

                                                   We Are One--'Expo Through My Eyes'

     Sharing increases your happiness. To celebrate the 2010 Shanghai World Expo, China Daily invites you to

share what you've seen, heard and experienced at the 6-month international event or Expo-related stories in

ENGLISH. Whether you are an Expo volunteer, a journalist, or a tourist, we'd like you to share with us your

expo experience, as viewed through your eyes. So if you like, please join us today in sharing the joy!

Eligibility(适宜人选): Everyone

     Topic: 2010 Shanghai World Expo

     Language: ENGLISH Only

     Length: No more than 1,000 words

     Content: Stories accompanied (附有) by photos are encouraged.

     Duration: May 1, 2010-October 31, 2010

     How to submit your stories: Send your stories and photos to expo@chinadaily.com.cn

     Why join us: In addition to (除……之外) the satisfaction of supporting our work.

     —Your stories will come out on China Daily's website

     —You will go in a lucky draw to win a prize.

1. China Daily invites us              . [ ]

A. to celebrate the 2010 Shanghai World Expo

B. to support their work

C. to write Expo-related stories in English for them

D. to win a prize

2. Who can take part in this activity? [ ]

A. Everybody.

B. A tourist.

C. A journalist.

D. An Expo volunteer.

3. What does the underlined word "submit" mean? [ ]

A. 撰稿

B. 呈交

C. 发表

D. 发送

4. Your story must not              . [ ]

A. be written in English

B. have any pictures

C. be less than 1000 words

D. be submitted after October 31, 2010.

5. If your story is chosen by the editor, we can read it              . [ ]

A. in a magazine

B. in a storybook

C. on China Daily's website

D. in the newspaper named China Daily

选择题