造成求助者心理与行为问题的关键点的内涵是（） A.它是在个体中持久存在不随环境变化改

New rules and behaviour standards (行为规范) for middle school students came out in March. Middle school is going to use a new way to decide who the top students are. The best students won't only have high marks. They will also be kids who don't dye (染) their hair, smoke or drink. Here are some of the new rules. 

Tell the truth. Have you ever copied someone else's work on an exam? Don't do it again! That's not honest. If you have played computer games for two hours in your room, don't tell your parents that you have done homework.

Do more at school. Good students love animals and care for other people. April is Bird-Loving Month in our country. Is your school doing anything to celebrate? You should join! That way, you can learn more about animals and how to protect them. Have you ever quarreled（吵架）with your teammates when your basketball team lost? Only working together can make your team stronger. Be friendly to the people you are with. Try to think of others, not only yourself.

Be open to new ideas. Have you ever thought that people could live on the moon? Perhaps you'll discover（发现） Earth II someday. Don't look down at anyone. Everyone's ideas are important. You should welcome them, because new ideas make life better for everyone.

Protect yourself. Has someone ever taken money from one of your classmates? Don't let it happen to you. If you have to go home late, you should let your parents know.

Use the Internet carefully. The Internet can be very useful for your studies. But some things on the Internet aren't for kids, so try to look at Web pages that are good for you. You can use the Web for fun or homework.

小题1:According to the passage, which of the following is not true?

A．Take care of yourself when you are out.

B．Tell the truth, even when you are wrong.

C．Keep some animals to protect them.

D．Use the Internet, but keep away from bad thing小题2:The main idea of the fourth paragraph is about         .

A．making the team stronger

B．working together with others

C．being a good friend to others

D．getting on well with others小题3:The passage tells us how to         .

A．be top students

B．do more at school

C．care for others

D．use the Internet

离心泵属于流体流动作用泵。

患者，女性，22岁，4天前因劳累出现左侧下后牙龈胀痛，进食吞咽时加重，昨日起出现局部自发性跳痛，面部肿胀，张口受限，伴发热。检查：左侧颊部肿胀，局部皮温增高，压痛明显，局限于咬肌前缘处，并及凹陷性水肿，张口度约二指，左下颌第三磨牙近中低位阻生，牙龈瓣覆盖其上，充血肿胀，并见糜烂，挤压局部少量脓液溢出，同侧第一磨牙前庭沟丰满充血，压痛存在，第一磨牙叩诊（-），无松动，无龋坏，未及牙周袋

该患者第一磨牙颊侧前庭沟处肿胀原因为（）。

A.根尖脓肿

B.牙周脓肿

C.根尖囊肿继发感染

D.第三磨牙冠周脓肿扩散引起

E.颊间隙感染引起

将损伤分为急性损伤与慢性劳损的分类法是（）

A.按部位分

B.按损伤性质分

C.按时间分

D.按受伤程度分

E.按受伤部位破损情况分

管理方格理论中，被称为战斗集体型的是（）

A.1.1型

B.9.1型

C.1.9型

D.9.9型