【单选题】Reasons for a nation to trade with other nations in the world can be ( )
【多选题】____,____,____ and many other reasons are all responsible for the boom in international trade.
【简答题】Social reasons for trigging depression are ______.
【多选题】Asking for reasons
A.
Why do you think that?
D.
What are your reasons for saying that?
E.
Can you explain why you think so?
【单选题】设置windows桌面背景为6张风景图片,时间间隔30秒,顺序播放。设置屏幕保护程序为"照片",等待时间为5分钟,放映速度为"慢速"。请从下列选项中找出正确步骤完成操作。①在打开的“个性化”窗口中,单击“屏幕保护程序”按钮,打开“屏幕保护程序设置”对话框,在“屏幕保护程序”选项组中选择“照片”选项,并将等待时间设置为5分钟;②在桌面空白位置处单击鼠标右键,在快捷菜单中选择“个性化”命令,打开“个性...
【多选题】What are the possible reasons of a delayed flight?
A.
poor weather conditions
B.
maintenance of aircraft