We know much about the universe(宇宙). It means the earth, the sun, the moon, the stars, and the space 21them.
Most of the stars are much bigger than the moon, but they look smaller 22they are far away from the earth. At night, the moon is high in the sky like a light. But the moon has no light of its own. The light of the moon（3）the
sun. The sun gives us light, heat and life. And the plants, animals and men will die without the sun.
The earth is going around itself （4）. When the part of the earth turns to the sun, it is day. The （5） part of the earth is night.
The earth is our homeland. We should love it.
2、______

[单选题]We know much about the universe(宇宙). It means the earth, the sun, the moon,

[单选题]We know much about the universe(宇宙). It means the earth, the sun, the moon,

[单选题]We know much about the universe(宇宙). It means the earth, the sun, the moon,

[单选题]We know much about the universe(宇宙). It means the earth, the sun, the moon,

_____scientists have learned a lot about the universe, there is much we still do

[问答题]The moon looks much bigger than any other stars in the sky.

[单选题]What do we know about Olivetti ?A．It produced the best typewriter in the word.B．It designed the word’s first mainframe. computer.C．It exported more typewriter than other computer.D．It has five independent companies with its head office in lvrea.

[单选题]What do we know about the girl? （ ）A．She is new to the school．B．She writes for the school newspaper．C．She seldom asks questions in class．

[单选题]What do we know about the girl?A．She is new to the school,B．She writes for the school newspaper.C．She seldom asks questions in class.

[单选题]What do we know about the girl?A．She is new to she school.B．She wriers for the school newspaper.C．She seldom asks questions in class.