逻辑斯蒂增长模型的曲线是呈 ( )A．J型 B．S型 C．直线 D．抛物线

We’ve talked about snails (蜗牛) and their slow move. But much of the time snails don’t move at all. They are in their shells (壳) —sleeping.

Hot sun will dry out a snail’s body. So at the least sign of hot sun, a snail draws its body into his shell. A snail will die in a heavy rain. So when it rains, a snail does the same thing, too. A snail can sleep for as long as it needs to. It spends all the winter months in its shell, asleep.

In the spring the snail wakes up. Its body, about three inches long, comes out from the shell. When hungry, the snail looks for food. Its eyes, at the end of the top feelers (触角), are very weak. But its sense (感觉) of smell is very strong. It helps the snail to find food and the new greens.

A snail’s mouth is no bigger than the point of a pin (大头针). Yet it has 256,000 teeth! The teeth are very small, and you can’t see them. If you put a snail in a hard paper box, it will eat its way out! And if a snail wears out its teeth, it will grow new ones.

小题1: A snail _________.

A．moves more slowly at night

B．has thousands of feet

C．doesn’t move at all　　

D．sleeps much of the time小题2: In the sentence “A snail draws its body into its shell”, the word “draw” means _____.

A．to make with a pencil

B．to push

C．to pull

D．to move away小题3: From the story, we know _________.

A．a snail’s shell is very thin

B．a snail can’t see well

C．a snail’s nose is quite short

D．a snail’s body changes in different seasons小题4: A snail goes to sleep when _____.

A．it feels hungry

B．it is put into a paper box

C．spring is coming

D．it rains heavily小题5:Which of the following is wrong?

A．In winter the snail doesn’t eat or move.

B．A snail doesn’t like living under the sun

C．The snail’s teeth can’t be worn out.

D．The snail’s nose helps to find food.

装修工程完工并提出验收时，应该在（）个工作日内组织相关人员进行验收。

A、一

B、二

C、三

D、四

个别包含一般，但一般并不包含个别。 ( )

公安民警不可以不经警告直接使用武器。

下列哪种快速心律失常不宜用电复律（）

A.室上性心动过速

B.心房颤动

C.心房扑动

D.室性心动过速

E.此快速异位心律失常系病态窦房结综合征的一种表现，即快慢综合征