健康教育活动的第一步应进行（）
A.干预计划制定
B.健康教育诊断
C.计划实施准备
D.计划实施
E.规划评价
参考答案：B
In January, 2011, ____ leader of the Chinese Communist Party Hu Jintao was warmly received by Barak Obama, who was elected ____ president of the US two years ago.
A．/; /
B．the; /
C．the; the
D．/; the
压能转变为机械能的能量转换装置称（）。
