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【单选题】
Why were the images not discovered during the initial survey?
A.
Traditional way of viewing was employed.
B.
People were not expecting to find any images.
C.
Modern equipment was used to explore the cave.
D.
The torches the researchers used were not powerful enough.
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举一反三
【单选题】While I was looking through the news online,_.
A.
did a video of a lovely bear come up
B.
did come up a video of a lovely bear
C.
up did a video of a lovely bear come
D.
up came a video of a lovely bear
【简答题】They gave him the worst news any musician could bear: he was gradually going deaf.
【单选题】—Hi! Ann, I have good news for you . —______? What is it ?
A.
What
B.
Who
C.
Ok
D.
Really
【单选题】This passage is mostprobably taken from_______
A.
an advertisement
B.
a news report
C.
an announcement
D.
a novel
【单选题】导致染色体畸变、核酸碱基改变或DNA断裂的自由基主要为
A.
O2-
B.
OH•
C.
H2O2
D.
LO•
E.
LOO•
【单选题】导致染色体畸变或DNA断裂的自由基主要为 ( )
A.
O 2-
B.
OH -
C.
H 2 O 2
D.
LO -
E.
LOO -
【多选题】染色体断裂导致的畸变有()
A.
缺失
B.
重复
C.
易位
D.
倒位
【单选题】导致染色体畸变、核酸碱基改变或DNA断裂的自由基主要为:
A.
超氧阴离子
B.
OH•
C.
H2O2
D.
LO·
E.
LOO·
【单选题】陕西省在动物地理上横跨()与东阳两大界,动物种类比较丰富。
A.
3926万
B.
4733万
C.
2733万
D.
5733万
【单选题】染色体断裂导致的畸变有
A.
缺失
B.
缺体
C.
多体
D.
倒位
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