Our planet is about ______ years old.
#51853
A
35,000
B
4600
C
4600 million
D
500 million
推荐题目
There are about seven ____ students in Grade Eight in Chezhan Middle School.
#51774
A
hundreds
B
hundreds of
C
hundred
D
hundred of
The World Bank has warned that rising food prices are pushing ________ people below poverty line (贫困线).
#51732
A
millions of
B
million of
C
million
D
millions
The volunteers sent _______ books to a mountain village school on Children’s Day.
#51664
A
two hundreds of
B
two hundred of
C
two hundreds
D
two hundred
Everyone knows ______ Olympic Games will be held in London in July, 2012.
#51503
A
the 30th
B
the 30
C
30
D
a 30