When youin Shenzhen, I will show you around this city.
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By the time you get back, Ithe house.
A. have painted
B. will have painted
They promised theythe project by the end of this week.
A. would have finished
B. will have finished
“@media (max-width:500px)”指定的媒体查询条件是( )。
A. 屏幕宽度大于500px
B. 屏幕宽度大于等于500px
C. 屏幕宽度小于等于500px
D. 屏幕宽度小于500px
在@media媒体查询语句中,表示“或”的逻辑操作符是( )。
A. not
B. and
C. 逗号“,”
D. only