1.[单选题]How does the author evaluate the generalizations of people’s types in Para. 3?
A.Such generalizations help us judge the different characters of people we meet
B.Such generalizations are not inclusive enough to draw a convincing conclusion.
C.Such generalizations prove that nature plays an important role in determining social habits.
D.Such generalizations show that there are mainly two different types of people on the planet.
2.[单选题]What do we know about the generalizations of people’s type?
A.What do we know about the generalizations of people’s type?
B.People who live in mountain areas tend to have a long life.
C.People who live in areas with stable climate tend to be talkative and lively.
D.People who like drinking cow blood tend to be strong and tall.
3.[单选题]The author’s purpose of writing this passage is to______.
A.alert readers to the scarcity of natural resources
B.call for more research on the influence of geographical environment
C.introduce different elements in character cultivation
D.draw more attention to the health condition of mankind
4.[单选题]According to the passage, research into the influence of climate and geography should ____.
A.focus on unknown aspects
B. be pursued on a larger scale
C.be carried out among remote tribes
D.go ahead in depth
5.[单选题]It can be inferred that proper amounts of iodine, fluoride and calcium can_____.
A.benefit people’s physical health
B.influence the quality of water supply
C.help provide breeding places for pests.
D.strengthen a person’s character