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【单选题】
“穿花蛱蝶深深见,点水蜻蜓款款飞”诗句分别体现了蝴蝶和蜻蜓的两种行为是(  )
A.
防御行为、取食行为
B.
防御行为、节律行为
C.
取食行为、繁殖行为
D.
繁殖行为、攻击行为
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参考答案:
举一反三
【单选题】对于典型的前轮驱动车辆,通过修正前麦弗逊式悬架中的减震器支柱下部双头螺栓与转向节的连接孔,可以调节: ( )
A.
前束角
B.
前轮外倾角
C.
主销内倾角
D.
主销后倾角
【多选题】下列适合用于制备探针序列可有( )。
A.
寡核苷酸
B.
cDNA
C.
RNA
D.
外显子
E.
内含子
【单选题】My teacher used to _______ a bike to school, but now he is used to ________ a car to work.
A.
ride, driving
B.
ride, drive
C.
riding, drive
D.
riding, driving
【单选题】The mineral oil is used in Dr. Li’sexperiment to _____
A.
control the concentration of odours ina slightly detectable degree.
B.
act as a group of comparison with thatof the other smells.
C.
regulate the participants’ moods bydecreasing the smell’s concentration.
D.
protect the participants from losingsense of smell.
【单选题】The example of Dr. Prathap Reddy is used to stress that ______.
A.
discussion of the cross-border flow of talent sounded a somber note
B.
migrants sent huge amounts of money home
C.
colonialism has disappeared in India
D.
returning emigres are turning into ecomonic dynamos
【单选题】The example of Dr Prathap Reddy is used to stress that .
A.
discussion of the cross-border flow of talent sounded a somber note
B.
migrants sent huge amounts of money home
C.
colonialism has disappeared in India
D.
returning emigres are turning into economic dynamos
【判断题】Australian Bachelors degrees are 3 years in duration.
A.
正确
B.
错误
【单选题】The young man used to _____ to work, but he is used to _____ to work now. [     ]
A.
drive; walking
B.
drove; walked
C.
drive; walks
D.
driving; walk
【单选题】Whose name is used to call New World 'America' ?
A.
Columbus.
B.
Vespucci.
C.
Francois Dr. ake.
D.
Cartier.
【单选题】As the little boy ______ milk now, he doesn’t want to eat any other food.
A.
used to drink
B.
used to drinking
C.
is used to drink
D.
is used to drinking
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