因糠醛自身易发生氧化、缩合等反应储存寿命较短约为（）月。A、1 B、2 C、3 D、4

The high school years are a key period. The things we learn during this time really shape our lives. Liu Changming, principal of Beijing No. 4 High School made 18 suggestions for students just starting high school on how to get the best out of high school. Here are ten of them.

1) Read 50 books. But choose them from ten different fields.

2) Help a person. Look for a classmate, an elderly person, in fact anyone who could benefit（获益）from your help. You’ll find you benefit too!

3) Research. Research a particular area, such as science, history or art.

4) Make a foreign friend. Try to befriend someone from a foreign country. It’s an ideal way to learn about a foreign country.

5) Publish（出版）an article. Whether it appears in a newspaper, your school magazine or in your own blog, an article will be something to look back on in pride in later years.

6) Take up a new sport. Choose one you’ve never played before. If you find you like it, you’ll have a hobby for life

7) Join a club. Working hard in a club or other activities will give you a life outside of your studies.

8) Find a part-time job. Try and do the job for at least a month.

9) Find a person to learn from. Choose someone with unusual experience or special talent. Try to learn all you can from him or her.

10) Learn to cook four Chinese dishes. Learning how to cook is not only a practical skill but a way of building a bridge to other people.

小题1: According to the passage, by making a foreign friend you can ______.

A．learn about another culture

B．practice spoken English

C．discuss the international situation

D．share your happiness and sadness小题2:Beside learning a practical skill, another purpose of learning to cook is ______.

A．to help your parents with housework

B．to kill time

C．to have communication with others

D．to make friends小题3:Which of the following statements is True according to the passage?

A．You should read fifty books of the same field.

B．Do a part-time job for less than a month.

C．Try to publish an article to make you famous.

D．You can benefit a lot by helping others.小题4:The principal made the suggestions in order for the students to ______.

A．make contributions to society

B．achieve greet progress in high school

C．love high school life

D．finish high school

65岁，男性，右上肺继发型肺结核，涂阳，处方为四联用药抗结核治疗，请问结核病化疗联用的主要目的是（）

A.减少并发症

B.避免发生耐药性，增加疗效

C.避免副作用

D.可完全杀灭结核菌

E.避免后遗症

小明和小林两人都有9张卡片，小明给小林多少张卡片可使小林的张数比小明多25%？

设计新渠道一般采用（）

A.试算图解，查图法，电算解法

B.查图法，电算解法

C.电算解法，试算图解

D.以上全都不是

13世纪起，欧洲开始盛行复调音乐，（）合唱成为复调的主要形式，开始主要用于教会合唱团。

A.多声部

B.单声部

C.高声部

D.低声部