Unit 2We have not found life on any other planets yet.单词拼写1.None of the students in our class failed the exam.2.There are many galaxies in the universe.3.We have only one earth.Everyone should protect our environment.4.Its impossible for me to finish so much work in such a short time.5.Now working in groups is very popular in many schools.Its important to learn teamwork.用所给词的适当形式填空1.It is important to remember(remember)some new words every day.2.Is this room large enough to have(have)a meeting?3.Linda cant go with us now.She hasnt finished(not finish)the work yet.4.About three million(million)people go to this little but beautiful village every year.5.Im busy these days.Hanging out with friends is almost impossible(possible) for me now.句型转换1.Some scientists think there is water on Mars.(改为否定句)Some scientists dont think there is water on Mars.2.The universe is very large.(改为感叹句)How large the universe is!3.There will be many robots in the factory.(改为现在完成时)There have been many robots in the factory.4.They have already come back from Hong Kong.(改为否定句)They have not come back from Hong Kong yet.5.The boy is so careful that he made few mistakes.(改为同义句)The boy is careful enough to make few mistakes.单项选择1.Today Mr.Liu told us something about C universe in class.A.aB.anC.theD./2.导学号82654043The dining hall is B to hold 300 people.A.enough bigB.big enoughC.small enoughD.enough small3.导学号82654044They are just little children.Its C to finish the hard work.A.possibleB.importantC.impossibleD.enjoyable4.Who was hurt in the traffic accident?B.A.NoneB.No one C.Nothing5.导学号82654045Today,WeChat(微信) becomes very popular,and more and more people like to use it to B each other.A.depend onB.communicate withC.believe in.选词或短语填空possible,go round,none of,billions of,solar system1.Therere billions of stars in the universe.2.Does Mars go round the sun?3.None of us have been to Hangzhou.4.Nothing is impossible if you try hard.5.The solar system is only a small part of the Milky Way.任务型阅读导学号82654046When we talked about the space,we know the universe means the earth,the sun,the moon,the stars and so on in space.Many of the stars are so far away that we cant see them.Through our geography lessons,we know the earth (1)goes around the sun,and the moon goes around the earth.We have day and night because the earth keeps moving all the time.Just because the moon is closer to the earth than the sun,it looks much bigger than the sun.(2)The sun is bright enough to give out very strong light. The moon cant give any light at all,but it looks quite bright,too.Why?In fact,the light from the moon comes from the sun.(3)But in fact the stars are much bigger and brighter than the moon.(4)在宇宙中仍然有许多其他的行星。But of all these planets,only on the earth there are living things.People on the earth have studied the space all the time.Theyve sent many spaceships into the space many times.On November 3 and 14,2011,Chinese scientists let Shenzhou successfully dock with(对接)the Tiangong twice.This is one of the greatest events in the history of Chinas space.1.画线(1)处的汉语意思是 绕着转 。2.Why do we have day and night?We have day and night because the earth keeps moving all the time.3.写出画线(2)处的同义句。The sun is so bright that it can give out very strong light.4.把画线(3)处的句子译成汉语。但是实际上恒星要比月亮大得多,明亮得多。5.把画线(4)处的句子译成英语。There are still many other planets in the universe.