()闸门所用的工具和零配件必须专人保管,专地点存放,不得挪用丢失。
A.拆除
B.开启
C.关闭
参考答案:C
—Your new dictionary is so nice, Lily?
—Thank you, Mary. Are you considering buying _____ for yourself?
A.it
B.one
C.the one
D.that
3月份一定有31天.______.(判断对错)