在比例式中,两个外项的积与两个内项的积的比是1:1 [ ]
正确
粘贴操作的快捷键是()。
A.Ctrl+A
B.Ctrl+C
C.Ctrl+X
D.Ctrl+V
Visitors were at the pictures that the guide showed.
A.amazed; amazing
B.amazed, amazed
C.amazing, amazing
D.amazing, amazed