21. This modern plane is capable of_________ 60 passengers. A. tracing B. placing C. accommodating D. experiencing 22. It’s exciting to discover _________of creatures from other planets. A. spaces B. experiences C. weights D. traces 23. The _________are threatening to blow up the plane. A. treks B. adventures C. buggies D. terrorists 24. Do you think that_________ are physically similar to earth people? A. messengers B. terrorists C. aliens D. adventurers 25. She believes there is life on other_________. A. spaces B. Mars C. UFOs D. planets 26. Astronauts work in_________ conditions. A. weightless B. weights C. weighty D. weight 27. This chemical is ______to many forms of life. It can cause deaths or diseases. A. harmless B. poisonous C. useful D. special 28. Most people don't realize that they are________ polluted air. A. tracing B. breathing C. standing D. weighting 29. A/ An________ is a spacecraft that aliens travel in. A. accommodation B. flying saucer C. planet D. galaxy 30. The software________ US to get pictures from other planets. A. enables B. controls C. returns D. capable Giúp em ah hứa đánh giá 5 sao