下列人物中，被唐太宗比喻为可以“知得失”的一面镜子的是( ) A．魏征 B．皮日

3月24日是世界结核病防治日。下列关于结核病的描述正确的是[ ]

A．高倍显微镜下可观察到该菌的遗传物质分布于细胞核内

B．该菌是好氧细菌，其生命活动所需能量主要由线粒体提供

C．该菌感染机体后能快速繁殖，表明其可抵抗溶酶体的消化降解

D．该菌的蛋白质在核糖体合成、内质网加工后由高尔基体分选运输到相应部位

阅读短文，并按要求完成1-5题。

     Many students wear a pair of glasses because their eyes are nearsighted (近视). Do you feel tired when

you are always wearing the glasses? Yes, many of us will feel tired when we wear the glasses for a long

time. So a new kind of glasses is more and more popular now. And millions of people like it very much. It

is contact lenses (隐形眼镜).

     Millions of people use the contact lenses. For anyone who doesn't mind sticking his fingers in his eyes,

there are clear advantages: contacts correct vision better than glasses, less often crushed underfoot, don't

make you look boring, and come in a huge variety of forms-safe, firm, colored, and even theatrical.

     More and more people are turning to use of contact lenses. But are they safe to you? Latest research

shows that not all chemicals are effective in killing germs (细菌). And some of those germs can cause (引起)

blindness in 24 hours. While most problems with contacts can go back to poor hygiene (卫生) or overuse,

while tired and emotional, to sleep in their lenses for the third night running. 

     So you must pay more attention to your contact lenses. Keep the right ways of using it. Wash it in time

and in right ways. So that it can keep your eyes safe.

判断正误，英译汉及回答问题。（1为判断，2为翻译，3-5为简略回答问题）

1. And all of those germs can cause (引起) blindness in 24 hours. (T or F)

    ________________________________________________________________

2. Put the underlined sentence (in Paragraph 1) into Chinese.

    ________________________________________________________________

3. What do many students wear when their eyes are nearsighted?

    ________________________________________________________________

4. How should you use the contact lenses correctly?

    ________________________________________________________________

5. Why are more and more people turning to use of contact lenses?

    ________________________________________________________________

伤寒暴发流行的主要原因是

A．水源污染

B．食物污染

C．日常生活接触

D．苍蝇传递

E．蟑螂传播

．You can't see the___________ now for they are having a meeting at the moment．

A．editor-in-chiefs

B．by an hour

C．by hour

D．each hour

粗砂比细砂配制的型砂强度高。