问题 选择题

下图所示是气体制取装置,下列能用此装置制取气体并能“随开随用、随关随停”的是

A.大理石和稀硫酸制取二氧化碳

B.锌粒和稀硫酸制氢气

C.浓盐酸和二氧化锰制取氯气

D.固体NH4Cl和消石灰制取氨气

答案

答案:B

题目分析:该装置的使用条件是:块状固体和液体反应且不需加热,生成的气体不溶于水。A、大理石和稀硫酸反应生成的硫酸钙附着在大理石表面阻止了进一步的反应,故A错误;B、锌粒和稀硫酸制氢气,符合该装置的使用条件,故B正确;

C、二氧化锰和浓盐酸制氯气,需要加热,故C错误;

D、固体NH4Cl和消石灰制取氨气,需要加热,故D错误,答案选B。

点评:该题考查了制取气体的反应装置,气体制取装置的选择与反应物的状态和反应的条件有关,该装置的使用条件是:块状固体和液体反应且不需加热,生成的气体不溶于水,生成物不能阻塞多孔塑料板;是高考的热点,经常在实验题中出现,需要学生重点周围。

阅读理解

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Ellis Island is located in New York Harbor. Ellis Island is open daily all year round from 9:30 a.m. to 5 p.m., with extended hours during summer. It is closed on December 25. There is no admission fee to Ellis Island; but donations(捐赠) are gratefully accepted.

At Your Fingertips

Park information (212) 363-7620

Emergencies (212) 363-3260

Ferryboat information (212) 269-5755

Lost and found (212)363-7620

Dining, gifts & audio tour 344-0996

Transportation

Statue of Liberty and Ellis Island Ferry; Boats leave from Battery Park, Manhattan, and from Liberty State Park, New Jersey. They run about every 30 to 45 minutes beginning at 9:15 a.m.

(The time for ferry is changeable)

Hours: May vary; call the number above

Closed: December 25

Ferry fees (includes Liberty and Islands) adults, $7; senior citizens, $6; Children (age 3~17), $5. (Group rates are available for 25 or more adults.)

64. In summer, visitors will have ______ to visit Ellis Island.

A. a limited time  B. a wonderful time       C. a longer time   D. a shorter time

65. Which number would you call if our friend were suddenly ill?

A. (212)344-0996     B. (212)363-7620    C. (212) 269-5755  D. (212) 363-3260

66. Which of the following is NOT true?

A. People can visit Ellis Island free of charge.

B. The boats departure time from Battery Park is at 9:15 all the year round.

C. Ferry fees for children are cheaper than for adults.

D. Ferry fees for group visitors can be reduced.

67. We may infer from the passage that______.

A.boat is the only transportation to Ellis Island

B.visitors prefer to go to Ellis Island by boat

C.there are more visitors in winter

D.Ellis Island is open every day          

单项选择题