液体的主要物理性质是指 ？
参考答案：密度、容重、压缩性、膨胀性、粘滞性
读下面的句子连线。
The bag is under the chair.
The walkman is on the desk.
The lamp is in the desk.
The umbrella is on the chair.
— ____ is it?
— It's seven o'clock.[ ]
A. How much
B. How many
C. What time
