天然砂

（）液压电梯必须设安全钳，且装在轿厢上的电气安全装置应在安全钳动作之前或同时使主机停止运转。

A.直接作用式

B.间接作用式

原发性肝细胞癌的AFP阳性率（）

A.100％

B.80％～90％

C.70％～90％

D.60％～70％

E.50％～60％

根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项

Health is the most important thing in the world. Nothing is more important than health. If we take away our money, houses, cars or even our clothes, we can still survive.   小题1:  That is why we always try to eat in a healthy way and exercise regularly.

How can we keep healthy？In order to eat healthily, I usually avoid eating food high in fat, like French fries or cookies, which are junk foods.   小题2:  I eat a lot of vegetables and fresh fruit which are full of vitamins.

  小题3:  Taking exercise every day helps us build a strong body. Regular exercise is an important part of keeping me healthy.

What’s more, I think friends are an important part of one’s health.   小题4:  I always feel better when I am with friends than when I am alone. When I am with my friends, I always laugh. Laughing is also an important part of health. It is good to stay with my friends.

By eating properly and exercising regularly, I can keep my body at a proper weight and keep healthy. By spending time with my friends, I can keep my mind as well as my body happy. These things sound easy to do, but not many people can manage them.    小题5:  

A．On the other hand, doing exercise is very important．

B．There are some people who like staying alone, but they keep healthy．

C．Many studies show that people with a range of social contacts don’t get sick．

D．But if our health was taken away, it is certain that we would surely die．E．I only eat little meat．

F．I think a strong will is necessary if we want to keep healthy．

G．Some people appear fat because they often eat too much．

阅读下面一首诗，完成问题。

　　忆梅^②下西洲，折梅寄江北^③。单衫杏子红^④，双鬓鸦雏^⑤。西洲在何处？两桨桥头渡。日暮伯劳^⑥飞，风吹乌臼树。树下即门前，门中露翠钿^⑦。开门郎不至，出门采红莲。采莲南塘秋，莲花过人头。低头弄莲子，莲子青如水。置莲怀袖中，莲心^⑧彻底红。忆郎郎不至，仰首望飞鸿^⑨。鸿飞满西洲，望郎上青楼。楼高望不见，尽日栏杆头。栏干十二曲，垂手明如玉。卷帘天自高，海水^⑩摇空绿。海水梦悠悠，君愁我亦愁。南风知我意，吹梦到西洲。

　　[注]①西洲曲：一作“南朝民歌”。西洲，洲名，在长江中。②忆梅：指回忆在西洲折梅的往事。③江北：情人住地。④杏子红：像杏花一般鲜嫩的红色。⑤鸦雏：小乌鸦，羽毛黑而柔软。⑥伯劳：鸟名。据说习惯单栖。⑦翠钿：嵌有宝石的头饰。⑧莲心：双关语，“爱怜之心”。⑨望飞鸿：表示希望鸿雁捎个信儿给江北的情郎。⑩海水：如海的水。摇空绿：水天一色，相接相映，好像一齐摇荡起来。

1．这首诗歌的主旨是什么？

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2．诗中选择的意象有何特点？起什么作用？你能举几个例子说明吗？

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3．试找出诗歌中三处细节描写，它揭示了女主人公怎样的内心世界？

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患者，女，60岁，慢性咳喘20年，剧烈咳嗽 3d，无咳痰、咯血及发热，半小时前突发胸痛，呼吸困难，不能平卧，伴发绀。体检：血压150/100mmHg，呼吸40/min。右胸语颤减弱。呼吸音减低。心率110/min。以上表现符合

A．肺梗死
B．急性心肌梗死
C．自发性气胸
D．阻塞性肺气肿
E．急性左心衰竭