天津港雾日多集中在()
A、春夏季
B、夏秋季
C、秋冬季
D、冬季
参考答案:C
在分层设色地形图上,绿色表示 ( )
A.高原
B.海洋
C.平原
D.山地
________students are playing on the playground. ______students there is at least over 100.
A.A number of; A number of
B.The number of; The number of
C.A number of; The number of
D.The number of; A number of