单项选择题

Questions 30 to 32 are based on the passage you have just heard.

A．Introducing readers to unfamiliar situations.
B．Reminding readers of the truth.
C．Informing people new scientific development.
D．Telling people how to serve their communities.
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单项选择题
Which of the following is NOT probably a reason for electric vehicles’ good time
A．Rising gasoline price.
B．Fuel economy.
C．Affordable price.
D．Various choices.
单项选择题
A．Riders rinsing with carbohydrate liquids made less effort than those rinsing with water.B．The heart rates of riders rinsing with carbohydrate liquids are lower than those rinsing with water.C．Rinsing with carbohydrate liquids helps sport players fight fatigue.D．Swallowing carbohydrate liquids makes sports players less tired.
A．Riders rinsing with carbohydrate liquids made less effort than those rinsing with water.
B．The heart rates of riders rinsing with carbohydrate liquids are lower than those rinsing with water.
C．Rinsing with carbohydrate liquids helps sport players fight fatigue.
D．Swallowing carbohydrate liquids makes sports players less tired.
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