题目

 Only by communicating with each other more frequently ________ clear away the misunderstandings and solve the conflict. A. they canB. they will be able toC. can theyD. will they can 答案：C指出下列操作导致的后果．（1）把块状固体药品直接丢入试管底部，后果是 ．（2）倾倒液体时，标签没对着手心，后果是 ．（3）用燃着的酒精灯点燃另一只酒精灯，后果是 ．