1 . 选择适当的短语并用正确形式填空，注意有两个是多余选项且每个短语只能使用一次。

get up on one’s feet; refer to; crash into; relate to; suffer from; shelter from; date back to; look up

1. The solution was to plant trees so that the animals could________ the sun during the daytime.
2. This spring a lot of children________ a bad cold, and coughed a lot.
3. Many students are fond of ________the meaning of every new word in a dictionary.
4. In the future, pay increases will be________ productivity.
5. In the unearthed bones which________ the 16th B. C., the Chinese had been using the lunar calendar.
6. When she came back to life, the girl immediately________, but couldn’t recall what had happened.