单项选择题

What tendency can we find from the chart

A．Smokers in all grades have increased.
B．The higher the grade, the more the smokers.
C．The older a student, the more he smokes.
D．Low graders smoke less heavily.

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单项选择题

Which of the following is NOT against the IOC rules concerning its officials

A．Selling tickets internationally.
B．Raising the prices of the tickets.
C．Selling tickets to unofficial resellers.
D．Giving tickets to their friends.

单项选择题

What distinguishes Google online questionnaire

A．Preferring those who own pets.
B．Stressing overall personal qualities.
C．Asking more complex questions.
D．Believing in high-achieving experience.