一、听选信息
请听课本 P56 Listening 的听力两遍，并根据以下问题和括号内的提示，选择正确的信息回答问题。
1. What is the quiz they are going to do about?
(The Earth. / The sea. / The animal. )

2. Why are sea levels on our planet rising?
(Because of water pollution. / Because of plastic pollution. / Because of global warming. )

1. The sea.
2. Because of global warming.

二、回答问题
请听课本 P64 Cross-curricular connection 的听力两遍，并根据所听内容回答以下问题。
1. What makes that balloon float in the sky?

2. Are there weathercocks on top of some buildings?

1. Hot air makes it float in the sky. / Hot air.
2. Yes, there are.