Why mice are described in the passage as “creatures of the night“ because they are
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1 .Paragraph 6 _________.
A The Main Components of Maglev Train System B High-speed Maglev due to Zero Friction. C The Working Principle of the maglev Train. D Differences between Polarity and Magnetic Field. E Comparison of Maglev Trains with Traditional Ones. F Maglev with a Powerful Motor.
2 .Several countries in the world are using strong electromagnets ________.
A to develop a maglev train rail system. B to explain why maglev trains are faster. C to pull and push the train forward. D to create a magnetic field. E to experiment with the maglev train. F to travel from Paris to Rome in about two hours.
3 .You can connect a wire to the positive and negative ends of a battery __________.
A to develop a maglev train rail system. B to explain why maglev trains are faster. C to pull and push the train forward. D to create a magnetic field. E to experiment with the maglev train. F to travel from Paris to Rome in about two hours.
4 .A unique system of magnetic fields is created by the coils _______.
A to develop a maglev train rail system. B to explain why maglev trains are faster. C to pull and push the train forward. D to create a magnetic field. E to experiment with the maglev train. F to travel from Paris to Rome in about two hours.
5 .The frictionless maglev train enables you ___________.
A to develop a maglev train rail system. B to explain why maglev trains are faster. C to pull and push the train forward. D to create a magnetic field. E to experiment with the maglev train. F to travel from Paris to Rome in about two hours.
7 .“They” in the second paragraph refers to _______.
A ornithology and general biological science B contributions C professional biologists D birds
8 .David Lack’s research contributed to biological science specifically in the area of _______.
A Evolution B mating behavior C animal demography D immunology
9 .According to the passage, the ocean generally has more salt in _______.
A coastal areas B tropical areas C rainy areas D turbulent areas
10 .All of the followings are processes that decrease salinity EXCEPT _______.
A evaporation B precipitation C run off D melting
