松弛型复制控制

题型:名词解释

问题:

松弛型复制控制

考点:生物学DNA与染色体DNA与染色体题库
题型:名词解释

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.

题型:名词解释

下列说法正确的是

A.硫酸、纯碱、醋酸钠和生石灰分别属于酸、碱、盐和氧化物

B.蔗糖、硝酸钾和硫酸钡分别属于非电解质、强电解质和弱电解质

C.石炭酸、石油、烧碱分别属于酸、油脂、碱

D.碳酸钠、氢氧化钡、氯化铵、过氧化钠都属于离子化合物

题型:名词解释

听句子,缩写原文。()

A.The program on Channel Eight reminds me of TV commercials.

B.The product advertised in the TV commercial cannot help cure my illness.

C.I don’t watch TV that much, because of the omnipresent advertisements.

D.I have to sit on the sofa, because I am too sick to stand in front of the television.

题型:名词解释

期货从业人员对投资者服务结束或者离开所在机构后,3年后可以不再保守投资者或者原所在机构的秘密。()

题型:名词解释

某国每年对全国吸烟情况作调查,结果表明:最近三年来,吸烟的中学生人数在逐年下降。于是,调查组的领导得出结论:吸烟的青少年人数在逐年减少。 以下哪项如果为真,则使调查组领导所下结论不能成立( )

A.由于经费紧张,下一年不再对中学生作此调查

B.香烟的价格在下降

C.大部分吸烟的青少年都不是中学生

D.这三年来,强烈地表明反对吸烟的中学生在减少

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