正常月经周期中后半期的基础体温较前半期升高______。
参考答案：0．2～0．4℃
正常人的心胸比率为（）
A.≤0.45
B.≤0.47
C.≤0.50
D.≤0.53
E.≤0.55
Since the villagers' houses have been damaged in the earthquake, the soldiers are helping them ______ tents
(帐篷). [ ]
A. put on
B. put off
C. put up
D. put down
