How many lectures does the woan have on her busiest day?
A. Two
B. Three
C. Four
D. Five
查看答案
Why didn’t the smoke keep going up?[音频]
A. Because there was a layer of warm air up here
Becauseit happened in the swamp.
C. Becauseit came back down.
D. Becauseof the fire.
Where did the most famous inversion happen?
A. .In Florida.
B. InPennsylvania
C. InPittsburgh.
D. At the Allegheny-Monongahela Valley.
How many vehicles were involved in the crashes?
A. Twelve.
B. Seven
C. Sixty
D. Nineteen
在jQuery中，如果想要从DOM中删除所有匹配的元素，下面正确的是()。
A. delete()
B. empty()
C. remove()
D. removeAll()
微信支付 
支付宝支付