三大营养物质在体内氧化时所释放的能量用来维持体温的能量占总量的()
A.30%
B.40%
C.50%
D.60%
E.70%
参考答案:C
抱怨;埋怨
A.胆怯:怯弱
B.真挚:虚假
C.精确:近似
D.隐蔽:公开
We will put off the picnic until next month()the weather may be better.
A. where
B. that
C. when
D. which