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参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】Mother Nature Shows Her Strength Tornadoes (龙卷风)．and heavy thunderstorms moved across the Great Lakes and into Trumbull County on Saturday evening．The storms were dramatic and dangerous.George Snyder ...
A.
Right
B.
Wrong
C.
Not mentioned
【单选题】如图所示装置，电流计的指针发生偏转，正极变粗，负极变细，符合这种情况的是（ ）
A.
正极Cu，负极Al，S为浓HNO3
B.
正极Ag，负极Fe，S为CuSO4
C.
正极Al，负极Cu，S为浓HNO3
D.
正极Zn，负极Cu，S为CuSO4