用于剪切导线的钳子是（）。
A.克丝钳
B.扁嘴钳
C.弹簧钳
D.大力钳
参考答案：A
_____ people died in the big earthquake. [ ]
A. Two thousands
B. Two thousands of
C. Thousands of
下列（）是还原剂。
A、Na2CO3
B、抗坏血酸
C、KIO4
