单项选择题

Experts say food production will decrease because（）

A. more and more fresh water is used by farmers for their crops
B. the amount of fresh water that can be used for crops decreases
C. the earth will become warmer and warmer
D. the ability to use fresh water sources becomes restricted

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单项选择题
How does the woman know Professor Smith teaches anthropology 311（）

A. The man told her.
B. She used to attend Professor Smith’s class.
C. She is a friend of Professor Smith’s.
D. Many students ask for articles of the course.
单项选择题
What is the news item about（）

A. Water supplies of the Horn.
B. Drought and famine in Africa.
C. Kenyan forces hunt down al-Shabab.
D. High food prices of the Horn.
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