选择题：根据组距数列计算的算术平均数只是一个近似值。A、正确B、错误

Passage 6Even plants can run a fever, especially when they’re under attack by i

发挥市场机制的作用和国家宏观调控，都是社会主义市场经济体制的内在要求。A对B错

Here is a few tips.

6.他很抱歉让她过度劳累。

I didn’t mean ______ anything, but these apples looked so good I couldn’t resist