25.15读作二十五点十五。[ ]
错误
— I didn't hear you come in last night.
— That's good. We tried ______ noisy. [ ]
A. not be
B. not to be
C. to be
D. to be not
如图所示,潜水艇正在下潜,当潜水艇潜入水面以下继续下潜的过程中,潜水艇所受的浮力将
A.变大
B.变小
C.不变
D.无法确定