摘要： --- Is finished? --- Not yet. My dirty clothes are still soaking in the washing-machine. A. something B. anything C. nothing D. everything (1) There are lots of great places in the town which you can eat without 1. spending too much because of I'm always short of money! There are also some 2. place where it costs a lot, so don't forget to read the menu before going in. 3. The first place is Gino's. It's an Italian restaurant where serving the usual things 4. like pizzas and spaghetti. It's really cheaply and very friendly. Then there's 5. Black's Bistro. This is a café which is opened all day and you can eat anything 6. there from toast, sandwiches, salads, burgers and full meals. Again it's not 7. expensive and is very popular with young people. And finally, how about 8. peppers? Go there if you want some really nourishing Mexican food. Mexica 9. food can be bit hot, but you can choose dishes which are milder too. 10. (2) It is one thing to land science instruments on Mars; however, it is quite 1. another to establish a base for humans to explore planet. Daytime temperatures 2. can be rise above freezing, but, because of the extremely thin atmosphere, 3. the sun heat radiates back into space. Even at the equator, the temperature 4. drops -50℃ at night. In fact, there is no ozone layer to keep out 5. ultravioletradiation, and hardly some oxygen for either breathing 6. and burning conventional fuels. But despite all these problems, scientists are 7. currently working transport and clothing for Mars and an artificial environment 8. in which colonists could live. However, the potential cost make the idea of 9. human life on Mars nothing other than a fantastic dream. 10. 练习四

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