正确答案是（）
A. predicts
B. displays
C. proves
D. discovers
Which countries sponsored the measure？
A. France, Russia and the United States.
B. The United States, Britain and Russia.
C. France, Britain and the United States.
D. France, Britain and China.
正确答案是（）
A. raise
B. add
C. take
D. keep
The following details are true about the mothers who are most at risk EXCEPT
A. they give birth without the professionals' help.
B. they give birth at home.
C. they give birth to their first child.
D. they are young and uneducated.
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