问题 选择题

“凯式定氮法”是通过测奶品中含氮量(氮元素的质量分数)来折算奶品中蛋白质含量的一种方法。为了提高氮的含量,不法分子将三聚氰胺(化学式为C3H6N6)添加进奶品中,冒充蛋白质,使许多婴幼儿长期服用后产生结石,严重影响婴幼儿的健康。不法分子如果向1000g牛奶中添加2.52g三聚氰胺,能够冒充蛋白质的质量为(已知蛋白质中所含氮元素的质量分数约为16%)[ ]

A.2.52g

B.10.50g

C.23.68g

D.40.32g

答案

答案:B

阅读理解

What shaking the head means is not always the same in different countries.Maybe some visitors would be surprised when they first come to India.When they talk to an Indian,they would find he would often shake his head.The visitors might think that the Indian doesn’t like what they say.But in fact,they would be completely wrong.

Indians always shake their heads when they talk to others.It doesn’t mean “No”.If someone wants to visit India,he should know this,or he will be in trouble.

One day,a foreign officer went to India on business.He hired a car and asked an Indian to drive him.When he told his driver to take him to his office,the Indian shook his head at once.The officer said again and the driver shook his head again.At last the officer,of course,got angry.

“How dare you refuse my order?” he shouted,“Drive me to my office at once!”

The driver answered in quite a loud voice,too.“Yes,sir!” But to the officer’s surprise,the driver shook his head at the same time.

The car started and the foreign officer was now too surprised to say a word.He thought about it for a while,and then he nodded with a smile,“‘No’ means ‘Yes’ here!”

小题1:What does shaking one’s head mean all over the world?

A.Yes.

B.No.

C.Glad.

D.Yes or No.小题2:What should you do in India if you agree with somebody?

A.Shake your head.

B.Nod your head.

C.Speak in a loud voice.

D.Say it again and again.小题3:Why did the officer go to India?

A.He went there to visit his friend.

B.He went there to buy a car.

C.He went there to learn driving.

D.He went there because of his job.小题4:Why did the officer get angry?

A.Because the driver didn’t understand him.

B.Because the driver still shook his head after he said again.

C.Because the driver didn’t like the officer.

D.Because the driver didn’t answer in a loud voice.小题5:What can we learn from the story?

A.When you are in India,you should always shake your head.

B.You shouldn’t shake your head if you’re a driver.

C.Shaking head will make others get angry.

D.Different countries have different customs.

单项选择题