单项选择题

A. Today, about 14 percent are smokers. B. Today, about 80 percent are smokers.
C. Today, about 18 percent are smokers. D. Today, about 40 percent are smokers.
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单项选择题
A. Airplane designers expand the space of the first-class seats.B. A spacious lounge with fully equipped bar is installed in the first-class sections of the planes.C. The air-conditioning system in the first-class section is better than that of the coach.D. Some humidifiers are installed in the first-class cabins.
A. Airplane designers expand the space of the first-class seats.
B. A "spacious lounge" with fully equipped bar is installed in the first-class sections of the planes.
C. The air-conditioning system in the first-class section is better than that of the coach.
D. Some humidifiers are installed in the first-class cabins.
单项选择题
A. In order to save energy. B. In order to protect the weak and old ones. C. In order to show beautiful shape of them. D. In order to keep teamwork spirit.
A. In order to save energy. B. In order to protect the weak and old ones.
C. In order to show beautiful shape of them. D. In order to keep teamwork spirit.
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