课文填空 (共5小题，每小题1分，满分5分)
根据课文内容，准确补充完整下列句子，完全正确方可得分。
1. the earth is being warmer (see Graph 1) and that it is human activity that has caused this global warming rather than a random but natural phenomenon.
2. It will those who love Impressionist and Post-Impressionist paintings.
3. When I was young, I didn’t know much about the harmful of smoking.
4. They also agree that it is the burning of more and more fossil fuels that has this increase in carbon dioxide.
5.I was as a volcanologist working for the Hawaiian Volcano Observatory (HVO) twenty years ago. 1. There is no doubt that 2. appeal to 3. effects 4. resulted in 5. appointed
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(答案→)1. There is no doubt that 2. appeal to 3. effects 4. resulted in 5. appointed
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