While he was investigating ways t improve the telescope Newton made _______discovery which completely changed ____ man’s understanding of color.
#7676
A
a ,/
B
a ,the
C
/, the
D
the ,a
推荐题目
He is neither______ European, nor______ American. He is from______ Australia.
#10414
A
a; a; /
B
a; an; the
C
a; an; /
D
an; an; /
Let’s go to cinema, and that’ll take your off the problem for while.
#8490
A
the; the
B
the; a
C
a; the
D
a; a
Holiday is ______ time for leisure. But making good use of ______ time is not an easy task for most people.
#9090
A
the; the
B
a; the
C
the; a
D
不填; 不填
It’s quite obvious that the aging population in China will cause _____heavy pressure on _____whole society in the future.
#9476
A
/, the
B
the, /
C
a, the
D
a, a
By the end of September 2013，＿＿＿＿．number of netizens in China has hit ＿＿＿record high of 604 million．
#8009
A
the；the
B
a；a
C
a；the
D
the；a