Unit 1 Cultural relics
Ⅰ.词性转换
1. The plane crashed four days ago, but they’re still holding out hope of finding more ________ (survive).
2. He knew clearly that the ________(evident) he offered would stand up in the court.
3. All the people in the lecture hall stared at him in ________(amaze) when he talked loudly with his friend.
4. Mr Foker himself is a ________(worth) man, though not of high extraction or indeed much education.
5. The new teacher is still very much an unknown quantity but we have hopes that he will be a ________ (value) member of our team.
Ⅱ.单句填空
6. When the ship was damaged by a typhoon, the captain refused to leave his ________(sink) ship firstly.
7. It was reported that a chemical factory ________(explode) last night, which killed thirty workers.
8. Young as she is，our English teacher is very experienced and ________(high) thought of by all of us.
9. The father went to the bookstore ________(select) a reference book for his son.
10. Don’t forget to leave time for play.Sometimes play can be ________(value) than books.
Ⅲ.短语填空
11. The scientists said that this kind of medicine would ________________(用作) a cure for AIDS patients.
12. While staying in the village, James unselfishly shared whatever he had with the villagers without asking for anything ________________(回报).
13. The purse was given back to the passenger when she proved that it transform和convert的区别________________(属于) her.
14. Workers were busy ________________(拆卸)televisions, cellphones and computers—anything electronic.
15. He said that as the nation was________________(在交战), anything could happen and he reminded that the attacks would continue.
Ⅳ.句型训练
16. What caused the accident and who was responsible for it__________________. (remain)
是什么导致了这场事故，谁将为这场事故负责仍然是个谜。
17. ________________he will come to help me repair this broken pen, because he always keeps his word.(doubt)
毫无疑问，他将会来帮我修这支坏了的钢笔，因为他总是信守诺言。
18. There are many people present at the meeting, ________________ the same school. (belong)
有许多人出席会议，其中三分之二属于同一所学校。
19. Nowadays, many people are talking about ________________ lost cultural relics such as the Amber Room or Yuanmingyuan in Beijing.(rebuild)
现在很多人在谈论是否值得重建像琥珀屋或圆明园这样的遗失的文化遗产。
20. I guess nobody ________________ that these culture relics would suffer so much. (imagine)
我猜当时没有人能想象到这些文化遗产会遭受这么多。
Ⅴ.阅读理解
Solar and wind power have one thing in common besides being renewable(可再生的): when the sun isn’t shining or the wind isn’t blowing, they don’t generate electricity. But artificial photosynthesis(光合作用) may someday help change that.
Battery storage is being developed as a way to feed renewable power onto the power grid(电力网) regardless of the weather or the time of day. But some scientists are looking to plants and trees for another solution—using a man­made leaf that can turn solar energy into fuel in the form of liquid sugars or carbohydrates(碳水化合物).
In nature, plants use energy from the sun and convert it into chemical energy to be used later. Scientists at Caltech think they have discovered a missing link in the Proceedings of the National Academy of Sciences of the United States of America.
Nate Lewis, professor of chemistry at Caltech said, “If you want to bring on renewable sources, you’ve got to find a way to store carbon­free power and got to get high­energy­den
sity transportation fuels carbon­neutral. We have to be ready with technology that can do both of those things.”
“Artificial photosynthesis is the leading candidate for that job. The idea is that we want to take sunlight, water and potentially CO2 as the inputs and make fuel as the output，” Lewis said.
Scientists think that discovery shows artificial photosynthesis can work, but more research needs to be done to perfect the technology, which is likely to mature over the next decade or so.
Besides, there are also enormous challenges that aren’t likely to be overcome soon, including building new infrastructure to store, transport and use solar fuel. Production challenges of making artificial leaves haven’t been solved, either.
When will commercial­scale artificial photosynthesis technology start reducing greenhouse gas emissions？“When will the world get serious and charge carbon？” Lewis said. “When you answer that for me, you will also have the answer to your question.”

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