— _____ you at school last night?
— No, I _____ at home.
A:Was; was
B:Were; were
C:Were; was
D:Was; were
-_________, are you Jane?
-Yes, I am.
量筒和量杯是测量 ____的工具,量筒或量杯里的水面是凹形的,读数时,视线要跟 ____相平,如果俯视,读数会 ____(填“偏大”或“偏小”),如果仰视,读数会 ____(填“偏大”或“偏小”).