．The development of industry has been________gradual process throughout________human existence，from stone tools to modern technology. (2012·浙江，2)
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A
/；the
B
the；a
C
a；/
D
a；a
推荐题目
(2009江苏南通调研) While income worry is _______ rather common problem of the aged, loneliness is another problem that ________ aged parents may face.
#10253
A
a; 不填
B
the; 不填
C
a; the
D
the; the
It’s not ___ good idea to drive for four hours without ___ break.
#9984
A
a; a
B
the ; a
C
the ; the
D
a ; the
In my mind, no such thing in our country as Great Wall can stand for the image and culture of China.
#9241
A
a; the
B
a; /
C
/; the
D
/; /
Although Albert Einstein would someday be _________ famous scientist, he did not like __________ school.
#7689
A
a; 不填
B
a; the
C
the; 不填
D
the; the
Do you have ________ Smith here? I’d like to have ________word with him.
#8079
A
a; the
B
the; a
C
the; the
D
a; a