一朵花中既有雄蕊又有雌蕊称为()。
A.单性花
B.两性花
C.两被花
D.单被花
参考答案:B
—Why did you quit your job?
—It was good salary, but I didn’t like the working conditions.
A.in need of
B.in face of
C.in favor of
D.in terms of
膳食调查中,何种方法最容易取得较可靠的营养素摄入资料()
A.化学分析法
B.称重法
C.24小时膳食回顾法
D.一周膳食回顾法
E.记账法