Some scientists think that it may take ______ years to make robots look like people, and do the same things as us.
#51234
A
hundreds of
B
two hundreds of
C
two hundreds
D
hundreds
推荐题目
It is said that the gravity on Mars is only about of the gravity on earth.
#51511
A
three-eighths
B
third-eighth
C
third-eighths
D
third-eight
---Is the Great Wall a wonderful place? ---Yes, tourists come here for a visit every year.
#51533
A
thousand of
B
thousands of
C
thousand
D
thousands
The earthquake killed __________ and animals.
#51810
A
thousands of people
B
thousand people
C
thousand of people
D
thousands of peoples