丹麦海峡位于冰岛和_______岛（世界上面积最大的岛屿）之间，是欧洲和_______洲的分界线，沟通了_______洋和北冰洋。
格陵兰；北美；大西
在2、3、4、5、6、中，一共可以找出（ ）对互质数．
A．3
B．4
C．5
D．6
We can't have lunch at the restaurant, because ________. [ ]
A. all of us don't have money
B. not all of us have money
C. everyone of us don't have money
D. none of us have money
