Henry ______be at home because he telephoned me from Paris just a moment ago.
A. needn't
B. isn't able to
C. can't
查看答案
The temperature in ______is the hottest of all three.( )
Austria
B. Thailand
C. Hawaii
在Photoshop中使用圆形选取工具时,需配合______键才能绘制出正圆。
A. SHIFT
B. CTRL
C. TAB
D. Photoshop不能画正圆
单个微机之间“病毒传染”媒介是______。
A. 键盘输入
B. 硬盘
C. 移动介质
D. 电磁波
Great changes______ place since he left here.
A. have been taken
B. have taken
C. were taken