- 搜標(biāo)題
- 搜題干
- 搜選項(xiàng)
單項(xiàng)選擇題
txt1="Whatavery"；txt2="niceday"；txt3=txt1+txt2；輸出結(jié)果正確的是（）.
A.nice day
B.nice a day
C.What a very nice day
D.What a nice day
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