哪种保健功能卫生部不受理和批准（）
A.抗疲劳
B.辅助抑制肿瘤，防癌
C.减肥
D.调节血脂
E.以上都不对
参考答案：B
.
The global warming is going to be a big problem and many people are wondering ________ we can do with it.
A．if
B．how
C．that
D．what
简易信号通信中，下级的规定不得与上级的规定矛盾。（）
