更换膜包和底板时，应关掉（）电源。

阅读理解。

     We know the mosquito very well. Mosquitoes fly everywhere. They can be found almost all over the

world, and there are more than 2,500 kinds of them.

     No one likes the mosquito. But the mosquito may decide that she loves you. She? Yes, she. It's true

that male mosquito doesn't bite (咬) and only the female mosquito bites because she needs blood to lay eggs.

She is always looking for things or people she wants to bite. If she likes what she finds, she bites. But if she

doesn't like your blood, she will turn to someone else for more delicious blood. Next time a mosquito bites

you, just remember you are chosen. You're different from the others!

     If the mosquito likes you, she lands on your body without letting you know. She bites you so quickly and

quietly that you may not feel anything different. After she bites, you will have an itch (痒) on your body

because she puts something from her mouth together with your blood. By the time the itching begins, and she

has flown away.

     And then what happens? Well, after her delicious dinner, the mosquito feels tired. She just wants to find a

place to have a good rest. There, on a leaf or a wall, she begins to lay eggs, hundreds of eggs.

1. "Mosquito" means _______ in Chinese. [ ]

A. 苍蝇

B. 蜻蜓

C. 跳蚤

D. 蚊子

2. We know mosquitoes very well because _______. [ ]

A. they can be found easily

B. they fly here and there

C. there are many kinds of them

D. they can fly

3. If the mosquito doesn't bite you, it will _______. [ ]

A. get angry with you

B. be afraid of you

C. make a lot of noise

D. choose another one

4. The mosquito bites you _______. [ ]

A. when you're asleep

B. because you have choose it

C. too quickly to let you know

D. but doesn't like you

5. Which of the following sentences is wrong?[ ]

A. The itching begins after the mosquito bites you.

B. You feel terrible when the mosquito bites you.

C. Mosquitoes use blood to lay eggs.

D. All the mosquitoes don't like to bite people for blood.

患者高某，在施工工地口腔颌面部严重创伤，急诊入院。

经检查发现双侧上颌骨可疑骨折，确诊最有价值的辅助检查是（）。

A.头颅正位片

B.鼻颏位片

C.颅底片

D.下颌曲面体层片

E.头颅侧位片

女性，28岁，发作性呼吸困难6年，加重1小时，发作时常先有鼻部发痒，查体：呼吸困难以呼气为主，双肺广泛性呼气性哮鸣音。

易发生的合并发症是（）。

A.肺癌

B.气胸

C.肺脓肿

D.肺结核

E.尘肺

有关第Ⅷ对脑神经损害的描述，不正确的是（）

A.传导性耳聋常见于外耳道和中耳疾病，神经性耳聋可由耳蜗或蜗神经病变引起

B.低音性耳鸣提示传导通路病变，高音性耳鸣提示感音器病变

C.前庭周围性病变所引起的眩晕常较重，起病突然或周期性发作

D.眼球震颤可见快慢两个相反方向的运动，通常规定慢相的方向为眼球震颤的方向

典型心绞痛通常持续

A．心尖部一过性刺痛

B．胸骨后压榨性痛持续15min

C．胸骨后压榨性痛持续3～5min

D．情绪激动后心前区不适，卧床2d后逐渐减轻

E．上腹部疼痛，含化硝酸甘油lmin消失