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【简答题】It is New Year’s Day today. Many stores in our city are at great sales. So Lisa’s mother and Lisa go shopping in Justin Store. First they buy clothes. The clothes in the store are not expensive（昂贵的）. ...
【单选题】brother is in Grade Seven..
A.
Lisa's and Linda's
B.
Lisa and Linda
C.
Lisa's and Linda
D.
Lisa and Linda's
【单选题】No one can exactly tell us what .
A.
does Mona Lisa’s smile mean
B.
Mona Lisa’s smile means
C.
Mona Lisa’s smile does
D.
does Mona Lisa’s smile
【单选题】Which of the following statements is true of wind power?.
A.
There is plenty of wind to provide the world's entire energy needs.
B.
It is the most rapidly growing type of electricity production.
C.
It may be more expensive.
D.
All of the above.
【简答题】Scientists are studying and developing solar power, wind power, and hydroelectric______to replace oil.
【单选题】The possibilities for ______ energy sources, including solar power, wind power, geothermal power, water power and even nuclear energy promise greatly to the earthlings.
A.
altitude
B.
alternate
C.
alternating
D.
alternative
【单选题】What is the power curve of a wind turbine?
A.
The theoretical power output as a function of wind speed
B.
The actual power output under ideal wind conditions
C.
The expected power output under conditions of turbulent air flow
D.
The response of the turbine to varying electrical load
【单选题】— When is _____ birthday? — It's November 20th. [ ]
A.
Lisa
B.
Lisa's
C.
Lisa's brother
D.
Lisa's and her brother's
【简答题】Wind power are being used to generate (electronic) ______ .
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