——Jane failed the English exam. She must be very sad.——Let's go and .
A:ring her up
B:cheer her up
C:wake her up
The husband and wife have strange habits. He'd like to sleep with lamp _______ at night and his wife likes to sleep with the window _______.
Keep doing it, and you ______ healthy.
What color is the sweater?
物理知识在生活和生产中应用很广,紫砂茶壶(如图所示)就是其中一例.紫砂茶壶在倒茶水时所应用的物理知识是( )