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【多選題】
下列軟件中，屬于計(jì)算機(jī)操作系統(tǒng)的軟件有 （ ）
A.
Excel
B.
DOS
C.
windos98
D.
WORD
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舉報(bào)參考答案：
舉一反三
【單選題】John received an invitation to dinner, and with this work ____ , he gladly accepted it .
A.
finished
B.
finishing
C.
having finished
D.
was finished
【單選題】What do we learn about Mary?
A.
She is on vacation.
B.
She travels around the world
C.
She collects postcards
【單選題】I had just stepped out of the bathroom and was busy drying myself with a towel ____ I heard the steps.
A.
while
B.
when
C.
since
D.
after
相關(guān)題目：
【單選題】John received an invitation to dinner, and with this work ____ , he gladly accepted it .
A.
finished
B.
finishing
C.
having finished
D.
was finished
【單選題】What do we learn about Mary?
A.
She is on vacation.
B.
She travels around the world
C.
She collects postcards
【單選題】I had just stepped out of the bathroom and was busy drying myself with a towel ____ I heard the steps.
A.
while
B.
when
C.
since
D.
after
參考解析：
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