率先实现用的无线电通信实验,是哪两位科学家?
参考答案:
意大利人马可尼和俄国人波波夫。马可尼还获得诺贝尔奖。
《本草经集注》新增的药物不可能见于
A.《神农本草经》
B.《新修本草》
C.《证类本草》
D.《本草纲目》
E.《本草纲目拾遗》
When the man was trying to break into the bank, he was caught by the police__________.[ ]
A. in a spot
B. on the spot
C. off the spot
D. to the spot