举一反三
- They tend to ________ stimulating or intellectually challenging activities.
- Mountain climbing is one of () sports in the world. A: dangerous B: more dangerous C: the most dangerous
- What activities does extreme sports include？
- Different sports activities can _______(丰富) students' life in the campus.
- what is the benefit for american students taking part in different sports activities
内容
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17 A: In sports ground. B: At Joe’s home. C: In extracurricular activities. D: At Joe’s high school.
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中国大学MOOC: (3) More and more people are participating in sports and play activities now.
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As the legend says, fire is prohibited during , so people come to join some sports activities to keep warm.
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For two individuals who engage in the same two productive activities, it is impossible for one of the two individuals to ( ) A: have a comparative advantage in both activities. B: have an absolute advantage in both activities. C: be more productive per unit of time in both activities. D: gain from trade with each other.
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Swimming and playing basketballare his favorite leisure activities. （就划线部分提问） A: Whatare his favorite leisure activities? B: Whatis his favorite leisure activities? C: Whatare his favorite leisure activity?