下列哪种情况不是胸外心脏按压的禁忌证（）。 A.胸廓或脊柱严重畸形 B.心包压塞 C

阅读理解。

     What is the sky? Where is it? How bright is it? What lies above it? These questions are difficult to

answer, aren't they?

     Is the sky blue? The sky has no color. We know that there is air around the world. When planes fly,

they need air to lift their wings. Planes can't fly very high because the air gets thinner when they go up

higher. If we go up about 1,200 kilometers from the earth, we'll find no air there.

     When we talk about the sky, we usually mean the atmosphere around the earth. It is like a very thick

"cover" over the earth and keeps it warm. Without the "cover", the earth would be a very cold place and

nothing could live on it.

     Looking up above us, you will see the blue sky with white clouds. It is usually light blue, but the sky

would be dark blue if you go to the top of the highest mountains. And you will see fewer clouds between

you and the sun.

     And if you sit in a spaceship high above the earth, there is no air at all. The sky would be so dark that

its color would be black.

     Sometimes the sky doesn't look blue. When the sun rises and falls, you will see red, orange, and other

colors in the sky. These are the most beautiful moments of the day.

     Now you may understand that we see colors because the air scatters (散射) the sunlight. Light travels

through the air. Without air, there would be no light and no colors.

1. Planes can't fly very high because         .

A. there is air around the world    

B. the air gets thinner when they go up higher

C. it's warmer in the sky    

D. the air gets thicker when they go up higher

2. What's the meaning of the underlined word "atmosphere?"

A. 氧气    

B. 大气层    

C. 蓝天    

D. 气氛

3. We can see colors of the sky because         .

A. the sun rises and falls every day    

B. the sky has lots of colors

C. the air scatters the sunlight    

D. the sunlight has many colors

4. Which of the following is TRUE?

A. There is little air without light and colors in the sky.

B. The sky will look red, orange and other colors at noon.

C. The sky has only one color when the sun rises and falls.

D. The sky is dark blue if you go to the top of the highest mountains.

关于腹泻的非处方药物治疗，下列叙述正确的有（）。

A.肠道菌群失调性腹泻，可补充微生态制剂，例如双歧三联活菌胶囊

B.激惹性腹泻，因化学刺激引起的腹泻，可供选用的有双八面蒙脱石

C.消化性腹泻，对摄食蛋白质而致消化不良者宜服用胰酶

D.感染性腹泻首选小檗碱

E.病毒性腹泻，可选用抗病毒药，如阿昔洛韦、泛昔洛韦

第二节：写作（满分30分）

随着全球环境的恶化，越来越多的人选择过“低碳生活（low-carbon life）”，即减少二氧化碳的排放，低能量、低消耗、低开支的生活。请写一篇英文倡议书，倡议你的同学们加入“低碳一族”，为环保做出贡献。提示要点如下：

1.用手洗衣服；

2.多走楼梯，少用电梯；

3.去超市自备购物袋；

4.步行或者骑自行车上学；

5…….

注意：

1.词数：120-150左右。

2.可适当增加细节，以使行文连贯。

患有幽门螺杆菌相关性胃炎的患者，给予哪种抗生素最为宜（）

A.四环素

B.红霉素

C.庆大霉素

D.先锋霉素Ⅳ

E.羟氨苄青霉素

在直线回归方程中，回归系数6表示（）

A.当X=0时y的平均值

B.当Y=0时X的平均值

C.X变动一个单位时Y的变动总量

D.X变动一个单位时Y的平均变动量

E.Y变动一个单位时X的平均变动量