应该促进居民家庭实现从（）消费走向（）消费结构转型升级。 A.生存资料、发展资料 B

酒精灯的火焰可分为        、        和        三个部分，加热时应把受热物体放在           部分加热。

危险

阅读理解。

     Psychologist George Spilich and colleagues at Washington College in Chestertown,

Maryland, decided to find out whether, as many smokers say, smoking helps them to"think

and concentrate." Spilich put young non-smokers, active smokers and smokers deprived

(被剥夺) of cigarettes through a series of tests.

In the first test, each subject (试验对象) sat before a computer screen and pressed a key

as soon as he or she recognized a target letter among a grouping of 96. In this simple test,

smokers, deprived smokers and non-smokers performed equally well.

     The next test was more complex, requiring all to scan sequences of 20 identical letters

and respond the instant one of the letters transformed into a different one. Non-smokers

were faster, but under the stimulation of nicotine, active smokers were faster than deprived

smokers.

     In the third test of short-term memory, non-smokers made the fewest errors, but deprived

smokers committed fewer errors than active smokers.

     The fourth test required people to read a passage, then answer questions about it.

Non-smokers remembered l9 percent more of the most important information than active

smokers, and deprived smokers bested those who had smoked a cigarette just before

testing- Active smokers tended not only to have poorer memories but also had trouble

separating important information from insignificant details.

     "As our tests became more complex." sums up Spilich," non-smokers performed better

than smokers by wider and wider margins". He predicts, 'smokers might perform adequately

at many jobs- until they got complicated. A smoking airline pilot could fly adequately if no

problems arose, but if something went wrong, smoking might damage his mental capacity."

l. The purpose of George Spilich's experiments is ._____

A. to test whether smoking has a positive effect on the mental capacity of smokers

B. to show how smoking damages people's mental capacity

C. to prove that smoking affects people's regular performance

D. to find out whether smoking helps people's short-term memory

2. George Spilich's experiment was conducted in such a way as to ._____

A. compel the subjects to separate major information from minor details

B. put the subjects through increasingly complex tests

C. check the effectiveness of nicotine on smokers

D. register the prompt responses of the subjects

3. The underlined word "bested" in Para. 5most probably means_____

A. beat

B. envied

C. caught up with

D. made the best of

4. Which of the following statements is true?_____

A. Active smokers in general performed better than deprived smokers.

B. Active smokers responded more quickly than the other subjects.

C. Non-smokers were not better than other subjects in performing simple tasks.

D. Deprived smokers gave the slowest responses to the various tasks.

5. We can infer from the last paragraph that ._____

A. smokers should not expect to become airline pilots

B. smoking in emergency cases causes mental illness

C. no airline pilots smoke during flights

D. smokers may prove unequal to handing emergency cases

“在分配土地的过程中集体的活动非常活跃，当地的积极分子陆续出现并被吸收为干部。农村的街道房屋等外表形象没有什么改变，但各个人的身份地位则因他们参加会议和各种新的活动而有所改变。中华人民共和国创造了国民政府从来没有设想过的农村机构。”上述材料反映的是

A．“大跃进”运动

B．“人民公社化”运动

C．农业合作化运动

D．家庭联产承包责任制

某人用自己的生活节余8万元购买了一家上市公司的股票1万股。下列行为是他在该公司倒闭前后的做法，你认为错误的或不理智的行为有（）

①当他得知该公司经营运作出现困难时，卖掉了手中30%的股票

②该公司公示即将破产警示，他到公司找董事会提出退股要求

③公司破产后，他纠集人到公司总经理家，搬走一些值钱的家私，以补偿自己的经济损失

④他感到伤心与绝望，欲跳楼自杀

A、①③④

B、①②③

C、①②④

D、②③④