题目

The lion dance is part of traditional Chinese culture. People often perform it the night before the Chinese New Year. They ________ perform it for other happy occasions. People think the lion dance can ________ good luck and success.There are many different stories ________ how the lion dance began. One of them is like this: Hundreds of years ago, a monster called Nian came to a village in China. The villagers were ________. A lion chased Nian away. A year later, Nian came back again, but this time the lion couldn’t ________. So the villagers made a “lion” by themselves. Their “lion”17．图示为某电容传声器结构示意图，当人对着传声器讲话，膜片会振动．若某次膜片振动时，膜片与极板距离增大，则在此过程中（　　）A．膜片与极板间的电容增大B．极板的带电量增大C．膜片与极板间的电场强度增加D．电阻R中有电流通过