单项选择题

The current rate of annual increase in the world population is about （）.

A. 9 million
B. 5.7 million
C. 90 million
D. 20 million

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单项选择题
What measure was taken against bloods in London in 1980s（）

A. 50 underground stations were made waterproof.
B. A flood wall was built.
C. An alarm system was set up.
D. Rescue teams were formed.
单项选择题
With whom did Christopher NOT meet（）

A. The Syrian President.
B. The PLO leader.
C. The Jordanian President.
D. The Israeli Prime Minister.
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