【单选题】What does the word precursor in the context in the second paragraph mean? 查看材料
A.
A man that may come before the happening of an earthquake.
B.
The leading factor that may cause a series of events to occur.
C.
Any meaningful sigh that indicates some would-be happenings.
D.
An event that may have symbolic or significant nature.
【单选题】I don't know ____. Can you help me? [ ]
A.
what does the word mean
【单选题】What does the author think of those single people?
A.
They are using excuses to cheat themselves.
B.
They should be sorry for being single.
C.
They don't like weddings, because they are expensive.
D.
They reject staying in a comfortable home with a beautiful bride.
【简答题】What does “hit single” mean?
【简答题】what does “single up forward to breast line and spring” mean?
【简答题】What does the word 'computers' originally mean according to the passage?
【单选题】What does the word 'defensive' mean in the passage? 查看材料
【单选题】I don’t know ____________.
A.
what does the word mean