November 11th is China’s largest online shopping festival.
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Hu Xuanling likes to post photos online of what she has bought on November 11th.
A. 对
B. 错
On November 11th, everyone shops alone.
A. 对
B. 错
“Double 11” is not the only shopping festival in China.
A. 对
B. 错
路由器（Router）是一种典型的什么层设备？
A. 物理层
B. 数据链路层
C. 网络层
D. 传输层
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