SD是下列哪个药物的缩写
A．青蒿素B．氯喹C．蒿甲醚D．磺胺嘧啶E．乙胺嘧啶
参考答案：D
Oh, listen! It's raining outside. We'd better ______. [ ]
A. to keep the door closed
B. not close the door
C. to close the door
D. keep the door closed
通过多学科、多领域的技术融合聚变，以获得创新突破是（）。
A、想象
B、综合
C、联想
D、归纳
