The king was glad to know that Sissa only wanted some wheat because （）
A. wheat was not expensive
B. it didn't seem much
C. Sissa was honest to him
D. both A and B
How long did the Knights of Labor last（）
A. 60 years.
B. 31 years.
C. 50 years.
D. 21 years.
It is clear from the passage that Chevies refer to ()
A. the murdered couple
B. elderly owners of cars
C. computers
D. Chevrolets
若用ping命令来测试本机是否安装了TCP/IP协议，则正确的命令是（）。
A. ping 127.0.0.0
B. pingl27.0.0.1
C. ping 127.0.1.1
D. ping 127.1.1.1
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