Newspaper publishing offers plenty of opportunities to _____ capital but not much opportunity for profits.
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May I _____ a little on what Mr. Smith has just said?
A. expand
B. expend
If you _____ 2,000 calories per week on exercise you will cut your risk of a heart attack by one-third.
A. expand
B. expend
太阳辐射纬度分布不均引起的是（）。
A. 经度地带性分异规律
B. 纬度地带性分异规律
C. 垂直地带性分异规律
D. 地方性分异
因海陆相互作用引起的从海岸向大陆中心发生变化的是（）。
A. 经度地带性分异规律
B. 纬度地带性分异规律
C. 垂直地带性分异规律
D. 地方性分异
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