问题 填空题

我国名酒五粮液素有“三杯下肚浑身爽,一滴沾唇满口香”的赞誉,曾经获得两届世博会的金奖。有一种精品五粮液,它的包装盒上标明容量500ml,(已知ρ=0.9×103千克/米3),则它所装酒的质量为   (1)     千克,将酒倒出一半以后,剩余酒的密度为  (2)     千克/米3;如果用此瓶装满水,则水的质量是 (3)    千克。

答案

0.450.9×1030.5
 

①酒的质量m酒=ρ酒V=0.9×103kg/m3×500×10-6m3=0.45kg;

②倒出一半后,质量和体积减小一半,但密度是不变的,依然等于0.9×103kg/m3;

③装满水时水的质量m水=ρ水V=1.0×103kg/m3×500×10-6m3=0.5kg

阅读理解

“Depend on yourself” is what nature says to every man. Parents can help you. Teachers can help you. Others still can help you. But all these people only help you to help yourself.

There have been many great men in history. Many of them were very poor when they were young, and had no uncles, aunts, or friends to help them. Schools were few and not very good. They could not depend on them for education. They tried their best to learn something and never gave up till they became well-known. One of the most famous teachers in England used to tell his pupils, “I cannot make worthy men of you, but I can help you make men of yourselves.”

Some young men don’t try their best to make themselves valuable to the human beings. If they see their weak points and change their ways, they can be successful. They are nothing now, and will be nothing as long as(只要) they live, unless they accept the advice of their parents and teachers, and depend on themselves.

小题1:Why did many men succeed?

A.Because they had good education.

B.Because they wanted very much to become well-known.

C.Because they worked hard.

D.Because their families were very rich.小题2:What can a teacher do according to the famous teacher in England?

A.A teacher can make his pupils men of strength and courage.

B.A teacher can make his pupils worthy.

C.A teacher can help his pupils become well-known.

D.A teacher can do nothing.小题3:If young people depend on their own efforts, _______________.

A.they are sure to be very famous in the world

B.they can be successful in their lives

C.they no longer need help

D.they are sure to fail小题4:What can we learn about the writer from the passage?

A.He thinks highly of those who are working hard to be successful.

B.He thinks highly of parents and teachers.

C.He wants to be a famous scientist.

D.He thinks highly of those who are poor.

多项选择题