It is reported that between the year 1550 and 1950 about one kind of living things___each year .
#93811
A
died out
B
died of
C
died from
D
died down
推荐题目
He called another girl, ______ was more suitable for the position.
#93796
A
he believed
B
who he believed
C
he believed she
D
whom he believed
----How many times have you been to China?--- In fact, it is the third time that I __________ here.
#92766
A
was
B
am
C
had been
D
have been
A significant proportion of such children are condemned______.
#95175
A
fail
B
to fail
C
failing
D
failed
Scientists say it may be five or six years ______ it is possible to test this medicine on human patients.
#92459
A
before
B
after
C
since
D
when