BMAT考试：科学知识与应用练习（11）

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BMAT考试：科学知识与应用练习

Two rods, X and Y, are made from differentelectrically insulating materials. A student rubs rod X, which is initiallyuncharged, with a cloth, then holds it near to rod Y. The two rods repel eachother.

Which statement explains why repulsion occurs inthis experiment?

A   Rod Xgains electrons from the cloth and rod Y is positively charged.

B   Rod Xgains electrons from the cloth and rod Y is uncharged.

C   Rod X gains protons from the cloth and rod Yis negatively charged.

D   Rod Xgains protons from the cloth and rod Y is positively charged.

E   Rod X loses electrons to the cloth and rod Yis negatively charged.

F   Rod X loses electrons to the cloth and rod Yis positively charged.

G   Rod Xloses protons to the cloth and rod Y is negatively charged.

H   Rod Xloses protons to the cloth and rod Y is uncharged.

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