People Watchers
Some scientists do not wear laboratory coats（coat）. And only_____（41） （rare）do they use microscopes. These scientists are called _____（42） （society） scientists. They want to find out bow people act and why they do certain things.
Som eof them study the people of _____（43） （differ） cultures to learn their ways of doing things. They often live with the people of the culture they are _____（44）（study）. They try to feel the world of these people. And they must be good reporters because facts, not _____（45） （opinion） about other cultures, must bereported.
Another group of them studies how people _____（46） （live） long ago. They dig in the ground to find old tools that have been _____（47） （bury） for thousands of years. Sometimes, they even discover buildings hidden in the earth.
These scientists often work in _____（48） （cooperate） with each other. If one of them _____（49）（find） a Greek vase（花瓶）in the Middle East, he or she may ask for an _____（50） （explain） from an expert to find out how the vase got there.
1. rarely
2. social
3. different
4. studying
5. opinions
6. lived
7. buried
8. cooperation
9. finds
10. explanation
