以下哪些是世界公认的防治肥胖的经济、有效、无毒副作用的方法和根本措施,也是终身科学的控制体重的最佳方案( )
A. 减少睡眠
B. 吃减肥产品
C. 适量运动
D. 科学饮食
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以下哪些食物不是脂肪的主要来源( )
A. 粮食
B. 根茎类植物
C. 水果、瓜类
D. 动物性食物
在体育锻炼过程中,心率最好控制在最大心率的60%-80%之间对身心健康有益。( )
A. 对
B. 错
Choose the correct answer according to what you hear.[音频]
A. The self-driving system was faulty.
B. The car was moving at a fast speed.
C. The man in the car was absent-minded.
D. The test driver made a wrong judgment.
[音频]
A) They lost contact with the emergency department.
B. They were trapped in an underground elevator.
C. They were injured by suddenly falling rocks.
D. They sent calls for help via a portable radio.
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