【单选题】Where has John’s father been?
B.
He has been to the hairdresser’s.
【判断题】交流市电电压220V是指交流电的最大值。
【单选题】The greatest celestial observatory of Neolithic times, stonehenge, is (a work) of (such) (Magnitude as it) absorbed the energies of (prehistoric Britons) for three hundred years.
【单选题】______ important development of the Neolithic age was not in the manufacture of stone tools but in the production of food.
【简答题】生活中用的市电电压为 V ,就是指交流电压的 是 220 V ,其最大值为 V 。