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参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】Passage Two:Questions 26 to 30 are based on the following passage.If you want to stay young, sit down and have a good think. This is the research finding of a team of Japanese doctors, who say that mo...
A.
why certain people age sooner than others
B.
how to make people live longer
C.
the size of certain people’s brains
D.
which people are most intelligent
【单选题】对于电表的使用，正确的是（）。
A.
电流表要与被测电路并联
B.
测量时要保证电流从仪表的正极流入负极中
C.
电压表要与被测电路串联
D.
电流表的量程不够时可以通过串联电阻的方法来扩大量程