单项选择题

What is the proportion of giving birth to a triplet

A．1 in 1,500,000.
B．1 in 15,000,000.
C．1 in 150,000,000.
D．1 in 1,500,000,000.
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单项选择题
What did one woman say about the attack
A．The attack distorts the nature of the true resistance.
B．The attack helps build up the image of the true resistance groups.
C．The attack enhances the reputation of the true resistance groups.
D．The attack tarnishes the image of the true resistance.
单项选择题
Fish farming in the desert is possible because ______.
A．fresh water can be drilled from underground desert aquifers
B．the water drilled from the underground desert aquifers is only one-tenth as salty as sea water
C．the water drilled from the underground desert aquifers contains more nutritious elements than fresh water
D．the water drilled from the underground desert aquifers is not as hot as the sea water
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