九年級英語Unit11 Could you please tell me where the restrooms are?學案
mars is the fourth planet from the sun and it's the most like earth, but it's much 18 than earth because it's farther from the sun. it's also the only planet whose surface can be 19 from earth.
mars is often called "the red planet" because the rocks on it have a dark 20 color. there are strong winds on mars that can 21 dust into the hills. for many years, people have 22 mars. they have sent instruments and robots there. some of the robots got there, 23 most failed. nasa(美國國家宇航局) sent two robots to mars two years ago. they wanted to 24 signs of water and life on mars. some day, humans will travel to mars and have an even 25 look at our red neighbor. maybe it could be you!
16. a. when b. what c. which d. how
17. a. sound b. life c. air d. water
18. a. hotter b. colder c. bigger d. smaller
19. a. seen b. wrote c. heard d. visited
20. a. red b. black c. white d. yellow
21. a. blow b. look c. mix d. fly
22. a. lived on b. landed on c. studied d. written
23. a. but b. and c. however d. or
24. a. leave b. use c. find d. give