The earth is       years old.
#51891
A
four thousands six hundreds
B
four thousand six hundred
C
four thousand and six hundred million
D
four thousand six hundred millions
推荐题目
The bridge is about ___meters long.
#51592
A
two hundreds
B
two hundreds of
C
two hundreds
D
two hundred
—How many birds can you see in the trees?—I can see        birds in them.
#51523
A
hundreds of
B
five hundreds
C
hundred of
D
five hundreds of
---Would you like some tea? ---Yes, just_____.
#51752
A
a few
B
some
C
a little
D
little bit