苋菜红、胭脂红的最大允许使用量都是（）ɡ/㎏。
A．0.1
B．0.15
C．0.05
D．0.01
参考答案：C
The report shows that we’re making some progress but ______ we need to make greater efforts.
A．that
B．whether
C．what
D．why
硅铝明
