交通警察发出的是左转弯待转手势信号。
参考答案:对
—Does your mother like traveling by plane?
—No, she thinks it is expensive. [ ]
A. much too
B. too much
C. many too
下一代互联网将采用IPv6协议,他的一个网址将由().位二进制数组成。
A.32
B.64
C.128
D.256