听力原文：M: Do you like to play Pingpong, Lucy？
W: Of course, I play better than Tom Chen.
Q: Who is the better one？
（18)
A．Tom Chen.
B．Lucy.
C．Peter.

What can be inferred about a lake with brown water？
A．The lake is not safe for swimming.
B．The lake has a sandy bottom.
C．The water contains suspended particles.
D．The water is very deep in the center of the lake.

According to the professor, how did children acquire their culture throughout most of history？
A．By experiencing life in another country
B．By watching cultural programs on television
C．By going to the museum and the library
D．By listening to parents and grandparents

听力原文：Can the boy swim？
（14)
A．No, he can't.
B．Yes, he can't.
C．No, he can.

According to the conversation, what factors influence the color of water？ Click on two answers.
A．Waves on the surface
B．The depth of the water
C．Sediments in the water
D．The water temperature

听力原文：M: Welcome! What can I do for you？
W: I'd like a bottle of Coca Cola and some cakes.
M: OK. Here you are.
Q: Where are they？
（19)
A．In a food store.
B．In the post office.
C．In the police office.