题目内容

A lot of people have died from pollution in Cubatao.

A. Right
B. Wrong
C. Not mentioned

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【C2】

A. scales
B. amounts
C. numbers
D. degrees

A.availableB.efficientC.effectiveD.useful

A. available
B. efficient
C. effective
D. useful

A.芯径为10mm,光缆B.芯径为10mm,双绞线C.数据率为10Mbit/5,光缆D.数据率为10Mbit/s,双绞线

A. 芯径为10mm,光缆
B. 芯径为10mm,双绞线
C. 数据率为10Mbit/5,光缆
D. 数据率为10Mbit/s,双绞线

【B11】

A. easy
B. simple
C. difficult
D. free

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