How can fuel economy be improved？
A. By filling up the gas tank off the highway.
By avoiding the inconvenience of a tow car.
C. By considering transportation fees wisely.
D. By keeping your car in good condition.
查看答案
心包压塞可出现的异常血管征是
A. 奇脉
B. 水冲脉
C. 交替脉
D. 短绌脉
E. 重博脉
What is true about the proposed rule on mercury'？
A. It will prohibit the emission of mercury pollutant strictly.
B. It will help U. S. government deal with climate problem.
C. It will hinder the U. S. Congress from passing a bill on greenhouse gases.
D. It will encourage the production of more power from renewable sources.
A．drawingB．payingC．attractingD．concentrating
A. drawing
B. paying
C. attracting
D. concentrating
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