一、听音，标号（写阿拉伯数字）。

42315

二、听音，选回答。
()1. A. It comes from rivers, lakes and seas. B. We use it every day.
()2. A. We can get power from the sea. B. Wind can make electricity.
()3. A. We can talk about water power.
B. How do we make power from water?
()4. A. Thank you! B. Good idea!

1. A 2. A 3. B 4. B

三、听音，判断对(√)错(×)。
()1. Tom chooses solar power for the project.
()2. Ann thinks solar power can't make electricity.
()3. Ann wants to know how we make power from the Sun.
()4. They will go to the library and work on the project together.

1. √ 2. × 3. √ 4. ×

()2. —How much fresh water does Earth have?
—About of the water on Earth.
A.3%
B.5%
()3. —Where can we get water power? —From the .
A.rivers and lakes
B.rivers, lakes and seas
()4. —What does Jack think of water power? —
A.It is clean and helpful.
B.It's everywhere.

1.B 2. A 3. B 4. A