1 . 写出黑体词的词性及含义。
1. Somehow, these arguments and reasoning resulted in a global reduction in error. ________________
2. This was the sort of work that made you appreciate the dollars you earned and respect those who did the work, he told me. ________________
3. At the base is a rainforest. It ends abruptly at 3, 000 meters, giving way to lands of low growing plants. ________________

4 . 用方框中所给单词的适当形式填空，每词仅用一次。

down        base            concerned       stick       win

1. We should ________to our dream no matter how difficult it is.
2. The _______of the speech competition has been decided by the five teachers.
3. Tim has been feeling _______because of his low test scores.
4. Lucy hasn’t been back home and the family are all______about her safety.
5. The film that is _____ on a true story is popular with young people.

5 . To climb Mount Everest, people need to set a lot of b_________ along the route so that they can get access to food supply and medical treatment when anything goes wrong. (根据首字母单词拼写)