韬略tüo lûâ

出租车收费标准为：起步价6元（不超过3千米收费6元），3千米后每千米1.4元（不足1千米按1千米算）．小明坐车x（x＞3）千米，应付车费（　　）

A．6元

B．6x元

C．（1.4x+1.8）元

D．1.4x元

（4分）世界卫生组织发出“反式脂肪酸预警报告”，报告称：摄入过多的反式脂肪酸，容易堵塞血管而导致心脑血管疾病。顺反两种脂肪酸的结构如图所示。试回答下列问题：

（1）上述“A”、“B”结构能表示“反式脂肪酸”的是       （填“A”或“B”）

（2）上述顺（反）式脂肪酸都能与H₂在一定条件下发生氢化反应，其产物关系为     。

A．同分异构体

B．同系物

C．同一种物质

D．对映异构体（3）上述“A”、“B”结构中，有无手性碳原子，若有，请用“*”在上图中标出；若没有，请说明理由                                         

建设工程项目质量管理的PDCA循环工作原理中，“C”是指（）。

A．计划

B．实施

C．检查

D．处理

阅读理解。

     Two students started quarreling at school. One student shouted dirty words at the other, and a fight

began. What can be done to stop fights like this at school? In some schools, the disputants sit down with

peer mediators (同龄调解者). Peer mediators are students with special training in this kind of problems.

     Peer mediators help the disputants to talk in a friendly way. Here are some of the ways they use:

     1) Put what you think clearly but don't say anything to hurt the other. Begin with "I feel…" instead of

"You always…

     2) Listen carefully to what the other person is saying. Don't stop the other person's words.

     3) Keep looking at the other person's eyes when he or she talks.

     4) Try to see the other person's side of the problem.

     5) Never put anyone down. Saying things like "You are foolish" makes the talk difficult.

     6) Try to find a result that makes both people happy.

     Peer mediators never decide the result or the winner. They don't decide who is right and who is

wrong. Instead, they help the two students to find their own "win-win" result.

1. The underlined word "disputants" refers to the students ________.

A. who make peace  

B. who give in

C. who are lazy                  

D. who quarrel

2. When there is a fight at school ________.

A. the peer mediators decide who the winner is

B. the peer mediators and the disputants talk together

C. the students who quarrel decide who the winner is

D. the two students sit down and listen to the peer mediators

3. Peer mediators' work is ________.

A. to give lessons to disputants

B. to find out who starts a quarrel

C. to give students some special training                          

D. to help find a way to make both sides happy

4. Which of the following ways is not used by Peer mediators in finding a "win-win" result?

A. Listen carefully to what the other person is saying.

B. Try to see the other person's side of the problem.

C. Never say things like "You are foolish"

D. Never keep looking at the other person's eyes when he or she talks.

黑色金属材料QT40-17牌号表示（）。

A、球墨铸铁

B、灰口铸铁

C、合金铸铁

D、白口铸铁