问题 单项选择题

二、定义判断。每道题先给出定义,然后列出四种情况,要求你严格依据定义,从中选出一个最符合或最不符合该定义的答案。注意:假设这个定义是正确的。不容置疑的。


请开始答题:

动物消化食物的方式有两种,细胞内消化和细胞外消化,细胞内消化是单细胞的原生动物等将食物颗粒吞入细胞内进行消化。
以下属于细胞内消化的是( )。

A.鸟类的胃对食物进行的消化

B.人生病时不能进食便从静脉注射葡萄糖溶液

C.牛休息时将吃过的食物进行反刍

D.生活在淡水中的草履虫吞噬枯草杆菌

答案

参考答案:D

解析: 细胞内消化的定义要点是:①单细胞的原生动物;②吞入细胞内进行消化。A、B、C三项都不符合①;只有D项草履虫是单细胞动物,属于细胞内消化。故答案选D。

阅读理解

Not everyone has a chance to be a detective(侦探), but I got one when I was 13 years old. It happened in 1994.

One afternoon, I was walking down the street when I saw my father’s new car. I expected(期望) to see my father in the driver’s seat. But to my surprise, I saw a young woman driving instead, “She has stolen my father’s car,” I thought. So I quickly stopped a taxi and got in. I said to the driver, “Follow that new car in front,” I told him why.

The taxi driver had a car phone, so I asked him to call the police. Soon we heard the sound of a police car. The police told the woman to stop the car using a loudspeaker. The taxi came to a stop, too. I got out right then and said to the woman, “This is not your car. It's my father’s car.”

The woman smiled and said, “Oh. You’re Mr. Johnson’s son, right? I've seen your photo in your father’s office.”

Before I could say one word, the woman explained that she was my father’s new assistant(助手). My father had asked her to take his computer to the shop to have it repaired. He lent her his car. After hearing this, I called my father and he told us what the woman said was right. The police and the taxi driver laughed. I felt very sorry. It was both the first time and the last time I worked as a detective.

小题1: When did the story take place?

A.Thirteen years ago.

B.Twenty years ago.

C.Thirty years ago.

D.Before 1994.小题2: What did the writer see one afternoon on a street?

A.He saw his father driving a new car with a young woman.

B.He saw a young woman driving a new car with his father.

C.He saw a young woman trying to steal his father’s new car.

D.He saw a young woman in his father’s new car.小题3: How did the writer manage to get his father’s car to stop?

A.He had his father call the young woman.

B.He asked the taxi driver to stop his father's car.

C.He got the help of the police.

D.He called the young woman.小题4: How did the writer feel when he found out the truth?

A.He felt good about himself.

B.He felt sorry.

C.He felt very happy.

D.He felt excited.

单项选择题