1 

Scientists think that there has been life on Earth for   1  (百万) of years. However, we haven’t found life on other   2   (行星) yet. The earth, the moon, and the sun are a small part of our galaxy. Scientists have   3   ( 发现) many other galaxies in the universe. And there are many books about the universe. I’ve just finished   4  (看) a great book at school. It is a book about the solar system. It is so good that I’ve  5    (已经) asked the library to keep the next book for  6  (我). In the book, it says that astronauts have    7   (去) to Mars and even to Jupiter. I’ve never read that before. I’ve  8  (写信) to NASA to ask them for   9  （更多）information about astronauts and space. I hope they will write    10   (回) soon.

Scientists think that there has been life on Earth for   【小题1】 (百万) of years. However, we haven’t found life on other   【小题2】  (行星) yet. The earth, the moon, and the sun are a small part of our galaxy. Scientists have   【小题3】  ( 发现) many other galaxies in the universe. And there are many books about the universe. I’ve just finished   【小题4】 (看) a great book at school. It is a book about the solar system. It is so good that I’ve 【小题5】   (已经) asked the library to keep the next book for 【小题6】 (我). In the book, it says that astronauts have    【小题7】  (去) to Mars and even to Jupiter. I’ve never read that before. I’ve  【小题8】 (写信) to NASA to ask them for  【小题9】 （更多）information about astronauts and space. I hope they will write    【小题10】  (回) soon.