问题 单项选择题

从1727年—1902年的175年间,摄影术、电动机、电话、无线电四项科学技术从发现到实际应用,平均每项花了多少时间?()

A.45年

B.67年

C.81年

D.93年

答案

参考答案:B

解析:

[解一] 摄影术从发现到实际应用共花了112年,电动机从发现到实际应用共花了65年,电话从发现到实际应用共花了56年,无线电从发现到实际应用共花了35年,(112+65+56+35)÷4=67(年),选项B为本题正确答案。

[解二] 本题根本不用计算,四项发明的时间间隔分别112,65,56,35,四者之和的尾数为8,即可推测平均值乘以4的得数的尾数肯定是8,选项中只有选项B符合。故本题正确答案为B。

阅读理解

Even a child knows that nodding the head means" Yes".But some people will probably be puzzled(迷惑的)when they first come to India.When they talk to an Indian,he often shakes his head.They might think that the Indian does not like what he said,but on the contrary,he is expressing agreement.

The Indians have a habit of shaking their heads slightly when they talk to somebody.It doesn’t mean" No",but" Yes".

If a person doesn’t know this,it might cause misunderstanding(误解).

At one time a foreigner in India told his driver who was an Indian to take him to his office.The driver shook his head.The foreigner said his request again and the driver still shook his head.At last,the foreigner shouted angrily,“Drive me to my office at once!” The driver said in a low voice," Yes,sir,"smiling and shaking his head again at the same time.

小题1:In general,nodding the head means and shaking the head means_____.

A."Yes"..." No"

B."No"..." Yes"

C."Yes"..." Yes"

D."No"..." No"小题2:According to the habit of India,if someone agrees with you,he will ______.

A.nod his head

B.shake his head

C.neither nod his head nor shake his head

D.both nod his head and shake his head小题3:Why did the Indian driver shake his head when the foreigner asked him to drive him to his office? Because_________.

A.the Indian driver had something important to do

B.the foreigner agreed to give him only a little money

C.the driver felt uncomfortable at that time

D.in India shaking the head means agreement小题4:The foreigner became angry because_______.

A.the Indian driver didn’t want to send him to his office

B.he misunderstood the meaning of shaking the head in India

C.he asked the driver to send him to his office,but the driver didn’t say any words

D.the Indian driver asked him for a lot of money小题5:The phrase" on the contrary" means_____.

A.正相反

B.总之

C.与之相同

D.在另一方面

单项选择题