单项选择题

A. Saving energy.
B. Collecting information.
C. Increasing speed.
D. Improving performance.
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单项选择题
A. He will visit Russia next year.B. He will take a luxurious train next time.C. He won’t go to Russia in future.D. He will wait a few years to visit Russia.
A. He will visit Russia next year.
B. He will take a luxurious train next time.
C. He won’t go to Russia in future.
D. He will wait a few years to visit Russia.
单项选择题
A. Go to study in university. B. Work in a cell phone company. C. Conduct the cell phone research in University. D. Take part in another competition.
A. Go to study in university.
B. Work in a cell phone company.
C. Conduct the cell phone research in University.
D. Take part in another competition.
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