关于C反应蛋白的叙述不正确的是（）。 A.可早期诊断一些疾病 B.可鉴别细菌与病毒感

Homework should be done as soon as you get home from school. If you have after-school activities, the homework should be done first. At the same time, it is fine to allow（允许）for a snack break and also to allow for stretching(拉伸的)breaks.

Also, you should remember that it is your duty to do your homework. Next time, when you want to depend on(依靠) Mom and Dad for help, please try to find the answer yourself, because you will learn much, much more that way.

When you have a question, especially something about a science or math, don’t always turn to your teacher! It is a good idea to try to find the answer yourself. If this doesn’t work, you can also look at the materials in the back of the book. They may guide you to the pages you should look at to help you understand the problem.

Finally, while doing homework, don’t think about or do other things. Keep working. Setting a time limit(限制) often helps with this. Different ages decide different amounts of time. 10-15 minutes is good for a child that’s aged 6-8. A time of 20-30 minutes is about right for a child aged 9-12. Kids can keep studying for 30-45 minutes from the ages of 13 to 15. This, of course, depends on your abilities to pay attention and stay on tasks.

小题1:In the first paragraph, the writer mainly tells us that ______.

A．doing homework is the first thing you should do at home

B．after-school activities can’t affect doing homework

C．parents can help kids with their homework at night

D．kids need a good rest after school小题2:In the third paragraph,   the writer wants to tell us that ______.

A．students should ask the teacher more questions

B．thinking over the questions before asking others is important

C．problems can’t be solved without a teacher’s help

D．students shouldn’t always look at the materials in the back of the book小题3:The passage mainly tells children ______.

A．not to look away while doing homework

B．to do homework by themselves

C．not to turn to teachers when doing homework

D．to do their homework quickly and in the right way’

在百分位常模中，应用最广的表示个体在常模团体中所处位置的是（）。

A.百分点

B.百分等级

C.四分位数

D.十分位数

绝对压

下肢静脉曲张患者，下列哪种情况适合手术治疗

A．轻度静脉曲张
B．妊娠妇女
C．近期脑梗死患者
D．下肢大隐静脉瓣膜功能不全
E．下肢深静脉血栓形成

登山选择某线路，原因是什么？