问题 选择题

下列实验操作中,不正确的是

答案

答案:C

A、给试管中的液体加热时,用酒精灯的外焰加热试管里的液体,且液体体积不能超过试管容积的,图中所示操作正确.

B、倾倒液体时,瓶塞要倒放,标签要对准手心,瓶口紧挨;图中所示操作正确.

C、稀释浓硫酸时,要把浓硫酸缓缓地沿器壁注入水中,同时用玻璃棒不断搅拌,以使热量及时地扩散;一定不能把水注入浓硫酸中;图中所示操作错误.

D、检查装置气密性的方法:把导管的一端浸没在水里,双手紧贴容器外壁,若导管口有气泡冒出,装置不漏气;反之则相反.图中所示操作正确.

故选C.

点评:本题难度不大,熟悉各种仪器的用途及使用注意事项、掌握常见化学实验基本操作的注意事项是解答此类试题的关键.

选择题
阅读理解

阅读理解。

     Decision-making can be extremely difficult. Decision-making styles are significantly different. in different

cultures.

     In any approach to a problem and in any negotiations, the Western world turns to the "I to you" approach

while Japan, the "you to you" approach. The former means both sides present their arguments openly from

their own point of view. Naturally, often comes a confrontation (冲突) situation, which Westerners are very

skillful in dealing with. The latter is based on each side trying to understand the other person's point of view.

Thus, the direction of the meeting is a mutual (相互的) attempt to reduce confrontation and achieve harmony.

     Besides, Western decision-making goes mostly from top management (管理人员) and often does not

consult middle management or the worker. However, in Japan great consideration is given to the thoughts and

opinions of everyone at all levels. Based on "bottom-up direction", ideas can be created at the lowest levels,

travel upward through an organization and have an effect on the final decision.

     Difference in decision-making also comes from different communication styles. The Japanese business

person works to achieve harmony, even if the deal falls through, and will spend whatever time is necessary to

determine a "you to you" approach, communicating personal views only indirectly. They put a thorough job

above the Western deadline approach. So the Japanese are thorough in their meetings. Thus Americans are

often annoyed by the many meetings in many Japanese businesses. But where the American is pressing for a

specific decision, the Japanese is trying to think up a rather broad direction.

     On the other hand, once a given agreement is made, it is the Japanese who sometimes wonder at the slow

pace in which Westerners carry out the decision. The Japanese are eager to move forward and Westerners,

perhaps, lag (落后) behind as they take the time for in-depth planning.

1. A Japanese business bases its decision _____.

A. on top-down direction

B. on nothing but its workers' views

C. on bottom-up direction

D. only on its top leaders' opinions

2. The text mainly tells us that Japan and the Western world _____.

A. face great difficulty in making decisions

B. are different in decision-making styles

C. have all members contribute to a decision

D. have two approaches:"I to you" and "you to I"

3. Which of the following is TRUE of the Westerners?

A. They carry out the decision once it is made.

B. There are many meetings in their businesses.

C. They work to achieve harmony in doing business.

D. They are good at handling confrontation situation.

4. The author's attitude towards Japanese decision-making is _____.

A. positive

B. critical (批评的)

C. negative

D. casual (无所谓的)