题目内容

The chief causes of water shortage are population growth and water pollution.

A. Y
B. N
C. NG

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The problems Americans face concerning water are ground water shrinkage and tap water pollution

A. Y
B. N
C. NG

听力原文：M: Look, I'm sorry to bother you about this, but the music is really loud.
W: I didn't realize you could hear it.
Q: What will the woman probably do？
(13)

A. Turn up the volume.
B. Play the music more softly.
C. Stop talking so much.
D. Play different music.

The construction of massive dams and irrigation projects does more good than harm.

A. Y
B. N
C. NG

A．Its low purchase price.B．It's nutritious value.C．Its wide availability.D．Its higher

A. Its low purchase price.
B. It's nutritious value.
C. Its wide availability.
D. Its higher water content.