4G全国套餐用户当月数据流量超过多少后自动关闭数据功能，下月自动开通（）
A.3GB
B.6GB
C.10GB
D.15GB
参考答案：D
记集合M={x|x2＞4}，N={x|x2﹣3x≤0}，则N∩M=（ ）
.
Don’t you think ti is unfair for about two thirds of the population to have no_____ to health care?
A．access
B．basis
C．entrance
D．guarantee
