__________ Liu Wei has no hands, he can play the piano very beautifully.
A:If
B:Unless
C:Because
D:Although
在烧杯中加入一定量的枯草浸出液,烧杯中的枯草杆菌以其中的有机物为食.过几天后放入大草履虫,再过一段时间后,放入双小核草履虫,它们均以枯草杆菌为食.三种生物在浸出液中数量的增减情况如图所示,据图分析错误的是( )
下图是桃花的结构示意图,请根据图回答:
The writers ____ (decide) to have a Reading Week recently.