题目

Speed-reading is a necessary skill in the Internet age．We skim over articles, e-mails and WeChat to try to grasp key words and the essential meaning of a certain text．Surrounded with information from our electronic devices, it would be impossible to cope if we read word by word, line by line．But a new trend calls on people to unplug and enjoy reading slowly, listing benefits beyond the intelligent stimulation． A recent story from The Wall Street Journal reported on a book club in Wellington, New Zealand, where members meet in a cafe and turn off their smartphones．They sink如图所示的电路图中，有可能造成电源和电流表都损坏的是（ ）A． B． C． D．