Some solid evidence proves that water really exists on Mars, but unfortunately, there is still no of life.
#11298
A
mark
B
sign
C
symbol
D
signal
推荐题目
To our great joy, his health has improved ______.
#14394
A
a good many
B
a great deal
C
a large amount
D
a large quantity
According to the law，all foreigners have to________with the local police within two weeks of arrival.
#11060
A
associate
B
dispute
C
negotiate
D
register
The Meglev Train travels in a vacuum between two magnets, ___ no pollution is caused and less energy is consumed.
#14096
A
where
B
which
C
when
D
therefore
Martin was highly________ by Tom's ________ jokes.
#10659
A
amusing；amazed
B
amused；amusing
C
amazing；amused
D
amused；amazed
No one can ________ how the election will turn out，as there are many unknown facts.
#10893
A
protect
B
prepare
C
prevent
D
predict