男，45岁。排尿后突然昏倒，不省人事，面色苍白全身汗出，四肢发凉，二十余分钟后苏醒，

计算：

-8m²-|4m-2m²-（3m-m²-7）-8|。

Lots of kids go through times when they’d like to change their hair. Often, it’s girls who are most concerned(关心的), but boys may be interested in how their hair looks, too. Sometimes hair will change as you get older----all by itself----when you go through puberty(青春期).

Maybe it used to be lighter and now it’s darker. Or maybe it’s oilier than it used to be, and now you need to wash it more. It’s also normal, as you’re getting older, to notice your appearance more often. You might suddenly decide you want a hairstyle like other kids at school have. But some styles and looks require chemical treatments and long hours in the chair at the hair salon. Some people dye(染)their hair a different color, get a bunch of braids(辫子），or make their hair straight when it’s curly（卷曲). Are these treatments OK for kids? That’s something you should discuss with your parents. At any age, any chemical or heat applied to(应用于) the hair can damage the hair or cause it to break off.

Any styling that pulls hard on the hair can also hurt the scalp(头皮) or cause hair loss. Styling tools, such as curling irons and straightening irons, get very hot and can cause burns. And chemicals used to color, curl, or straighten hair can be very harmful if they get into your eyes or onto your skin.

小题1:The word “kid”in this passage refers to ____________.

A．girls

B．boys

C．students

D．not only girls but also boys小题2:Which of the following is NOT the cause of changes of one’s hair mentioned in the passage?

A．Change the hair style to act in a play.

B．It changes naturally with the age.

C．You want to make yourself look beautiful or cool.

D．A boy’s hair may become darker and darker when he gets older.小题3:What’s the main idea of the last two paragraphs of this passage?

A．If you want to change the color of your hair, you have to use chemical.

B．Hair can be straightened with an instrument.

C．You’d better change your hair with the help of your parents.

D．Hair change by chemicals or instruments can harm the hair or the scalp。

男，68岁，阵发性胸闷3年，持续加重6小时后突发意识丧失。查体：BP40/20mmHg，双肺呼吸音清。心率32次／分，律齐，各瓣膜区未闻及杂音。血清肌钙蛋白水平增高。

入院后经抢救患者病情平稳，但第3天突发喘憋，不能平卧。查体：心尖部可闻及3/6级收缩期杂音，双肺满布湿啰音。该患者最可能合并（）

A.心脏 * * 肌断裂

B.急性心包炎

C.二尖瓣狭窄

D.主动脉瓣狭窄

E.肺部感染

The following questions present a sentence, part of which or all of which is underlined. Beneath the sentence, you will find five ways of phrasing the underlined part. The first of these repeats the original; the other four are different. If you think the original is best, choose the first answer; otherwise choose one of the others.

These questions test correctness and effectiveness of expression. In choosing your answer, follow the requirements of standard written English; that is, pay attention to grammar, choice of words, and sentence construction. Choose the answer that produces the most effective sentence; this answer should be clear and exact, without awkwardness, ambiguity, redundancy, or grammatical error.

The only lucid arguments printed in the newspaper concerning the new bond proposal was put forth by the high school principal who wrote a series of letters to the newspaper’s editor.（）

A. The only lucid arguments printed in the newspaper concerning the new bond proposal was put forth by the high school principal in a series of letters to the newspaper’s editor.

B. The principal of the high school wrote a series of letters to the newspaper’s editor that put forth the only lucid argument concerning the new bond proposal that was printed in the newspaper.

C. In a series of letters to the newspaper’s editor, the principal of the high school put forth the only lucid argument concerning the new bond proposal to be printed in the newspaper.

D. The high school’s principal’s series of letters to the newspaper’s editor lucidly put forth the only arguments concerning the new bond proposal to be printed in the newspaper.

E. Putting forth the only lucid arguments concerning the new bond proposal to be printed in the newspaper, the series of letters to the newspaper’s editor were written by the high school’s principal.

将车辆底架中部制成一个较大的矩形空洞，以便充分利用机车车辆的限界，装运超高货物，这种长大货物车称为（）。

A、长大型车

B、落下孔车

C、钳夹车

D、凹型车