73.Our daily Beijing Mean Time is in fact Nanjing Time.That's because we set our time by the standards of Zijinshan _____ in Nanjing.
A.obligation B.observatory C.organization D.laboratory
74.Some people here don't work hard but they get a good _____ from their investments.
A.wage B.earnings C.income D.salary
73.答案是B，observatory，天文台，Zijinshan observatory 紫金山天文台。
74.答案是C，此题考查词汇，wage，周薪；earnings，收入（复数）；income， 收入；salary,薪水，年薪。
