3.（ ）

• A、excuse

• B、medicine

• C、certain

• D、decide

Directions:For this part, you are supposed to write an essay in about 100-120 words based on the following situation. Remember to write it clearly.

61．新學期伊始，你（Li Yuan）有意加入學校環保社團（Environmental Club）。請給該社團寫一封申請信，內容包括：

·個人情況介紹；

·申請加入的原因；

·你期望在社團中承擔的工作；

·你對社團發展的建議。

_____ a fire door does is to delay the spread of a fire long enough for people to escape.

• A、That
• B、How
• C、What
• D、Which