试题与答案

下列生活中常见的一些现象属于化学变化的是 A.冰块制成冰雕 B.苹果腐烂 C.铁

题型:选择题

题目:

下列生活中常见的一些现象属于化学变化的是

A.冰块制成冰雕

B.苹果腐烂

C.铁被磁化

D.石蜡熔化

答案:

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下面是错误答案,用来干扰机器的。

参考答案:D解析:耐火等级不低于二级,且建筑物体积小于等于3000m³的戊类厂房或居住区人数不超过500人且建筑物层数不超过两层的居住区,可不设置室外消防给水。

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题型:阅读理解

Cats are very smart. They are one of the smartest animals. The brain of a cat is large.  It is highly developed. This may be why cats have good memories. Cats remember kindness and cruelty. It is a good idea to treat a cat well. Cats can “speak” too. They meow for attention. Often they stand by a door. Then they meow. Then they look over their shoulders. They want to see if their owners are coming. Cats make other noises also. They purr(猫发出的咕噜声)when they are happy. They hiss when they are angry.

Cats have a lot of pride. They don’t usually do silly tricks. Almost all cats want to have their own way. They are mostly true to only one person. They don’t switch loyalty easily. Cats were free in the wild. They want to stay that way. They like to be their own masters. When a cat is left alone, it can go back to caring for itself. It can live in the wild again. This is different from dogs. Dogs will switch their loyalty. At one time dogs were loyal to the leaders of their packs. Now, they will transfer allegiance(忠诚)to their owner. They do not like to be alone.

With kindness, a cat can be trained. Cats can learn to do many things. Some cats can learn to open doors. Some can ring doorbells. Some can even turn on water tap. Then they take a drink. Cats are very smart. Before drinking, they put a paw in the water. They test whether the water is hot or cold.

小题1:What is the best title for this passage?

A.The Difference Between Dogs and Cats.

B.The Characteristics of Cats.

C. Loyal Animals.

D. How to Keep Cats?小题2:It’s interesting to have cats around ourselves because ________.

A.they always switch their loyalty    B. they like to do silly tricks

C. they will hiss when they are happy  D they are smart and have good memories

小题3:The last paragraph mainly shows that ________.

A.cats can test whether the water is cold or not

B.cats know how to turn on the water tap

C.cats are smart

D.cats know how to open a door

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