—My parents don't want me to watch TV on school nights. What should I do?
—Well, you _________ talk with them, but you must finish your homework first.
A:shall
B:could
C:can't
D:mustn't
实验室部分仪器或装置如图,请回答下列问题.
在“商品——货币——商品”的流通过程中,“商品——货币”阶段的变化“是商品的惊险的跳跃。”这个跳跃如果不成功,摔坏的不是商品,而是商品所有者。这说明( )