After George had returned to his house, he was reading a book
A.had returned
B.his house
C.he
D.was reading

When the unemployment rate is high, the crime rate is usually also high.
A.The unemployment rate and the crime rate are both higher.
B.The higher the unemployment rate is, the higher the crime rate is.
C.The unemployment rate is as high as the crime rate.
D.The high rate of unemployment depends on the high rate of crime.

"You're always making terrible mistakes", said the teacher.
A.The teacher asked his students why they always made terrible mistakes..
B.The teacher realized that his students always made terrible mistakes.
C.The teacher complained about his student making terrible mistakes.
D.The teacher made his students not always make terrible mistakes.

According to the passage, studies of contemporary subsistence societies can provide a ________.
A.further understanding of prehistoric times
B.broader vision of prehistoric natural environments
C.further understanding of modern subsistence societies
D.deeper insight into the dry-land farming

A typical feature of both modern and prehistoric hunter-gatherers is that ________.
A.they live in the forests for all their life
B.they don’t have a healthy and balanced diet
C.they don’t have a strong sense of community
D.they often change their living places

According to the author, most contemporary and prehistoric hunter -gatherers share ________.
A.some methods of production
B.some patterns of behavior
C.some restricted daily rules
D.only the way of duty division

Which of the following would serve as the best title of the passage?
A.Hunter-gatherers and Subsistence Societies
B.Evolution of Humans’ Farming Methods
C.A Brief History of Subsistence Farming
D.Hunter-gatherers: Always on the Move

His eel soup is better than any other soups I have ever eaten.
A.Of all the soups I have ever eaten, his eel soup is the best.
B.I have ever eaten many soups that are better than his eel soup.
C.His eel soup is the worst of all soups I have eaten.
D.His eel soup is good but I have ever eaten many others better.

"I will let you know the answer by the end of this week," Tom said to Janet.
A.Tom suggested giving Janet the answer by the end of this week.
B.Tom promised to give Janet the answer by the end of this week.
C.Tom insisted on letting Janet know the answer by the end of this week.
D.Tom offered to give Janet the answer by the end of this week.

He was suspected to have stolen credit cards. The police have investigated him for days.
A.Suspected to have stolen credit cards, he has been investigated for days.
B.Suspecting to have stolen credit cards, he has been investigated for days.
C.Having suspected to have stolen credit cards, he has been investigated for days.
D.He has investigated for days, suspected to have stolen credit cards.