题目内容
（请给出正确答案）
In the first sentence of the last paragraph, the pronoun"this"refers to______.
A．survey
B．question
C．answering
D．personal interviewing
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更多“In the first sentence of the l…”相关的问题
设有产生式：A→a｜β｜γ，且α、β、γ
ε。则在自上而下语法分析中，对A推导不带回溯的条件是_______。
A．FIRST(a)N FIRST(8)N FIRST(y)＝Ф
B．FIRST(a)N FIRST(β)＝Ф与FIRST(β)∩FIRST(y)＝Ф与FIRST(a)∩FIRST(y)＝Ф
C．FIRST(a)∪FIRST(8)∪FIRST(y)＝Ф
D．FIRST(a)∩FIRST(β)＝Ф或FIRST(β)∩FIRST(y)＝Ф或FIRST(a)∪FIRST(y)＝Ф
A.was the first
B.the first
C.the first who was a
D.she was the first
In the first paragraph, the word" spot" means______.
A．teach
B．help
C．find
D．treat
Who first used umbrellas？
A．Chinese
B．Romans
C．Creeks
D．Egyptians
______ were the people who first used umbrellas.
A．Chinese
B．Romans
C．Greeks
D．Egyptians
The word "media" in the first paragraph includes______.
A．the press
B．television
C．radio
D．all the above
