【简答题】Unit 1 More reading. For health and beauty. Read the article below from a website on exercise. Aerobics is one of the most beneficial and also one of the most beautiful forms of exercise. Any physical...
【单选题】When athletes expend vast amounts of energy, they are sometimes seen on the sidelines using supplemental oxygen. More than 90% of the O2 webreathe is used for the generation of which one of the follow...