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A．When Indians came to America, they heard hundreds of different European languages.B．

A. When Indians came to America, they heard hundreds of different European languages.
B. The people of well-developed tribes are farmers and fishermen.
C. Okay means raising and lowering the head.
D. Many English states have Indian names.

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A．She has recently gone there.B．It's not a very good one.C．There's one in her home tow

A. She has recently gone there.
B. It's not a very good one.
C. There's one in her home town.
D. It will be closed when she's free.

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听力原文： The word "okay" is known and used by millions of people all over the world. Still, language experts do not agree on where it came from. Some say it came from Indian people. When Europeans first came to America, they heard hundreds of different Indian languages. Many were well developed. One tribe especially had a well developed language. They were farmers and fishermen who lived in the rich Mississippi valley in what is now the state of Alabama. When problems arose, the headers of this tribe discussed them with the tribal chief. They sat in a circle and listened to the wisdom of the chief. He heard the different proposals often raising and lowering his head in agreement, and saying, "okeh," meaning, "all is so". The Indian languages have given many words to English. Many American states have Indian names, and so do rivers, streams, mountains, cities and towns.
(30)

American Indian.
British people.
C. Europeans.
D. African people.

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听力原文： If you are like most people, your intelligence varies from season to season. You are probably a lot sharper in the spring than you are at any other time of year. A noted scientist, Ellsworth-Huntington, concluded from other men's work and his own among people in different climates that climate and temperature have a definite effect on our mental abilities.
He found that cool weather is much more favorable for creative thinking than the summer heat. This does not mean that all people are less intelligent in summer than they are during the rest of the year. It does mean, however, that the mental abilities of large numbers of people tend to be lowest in the summer.
Spring appears to be the best period of the year for thinking. One reason may be that in spring man's mental abilities are affected by the same factors that bring about great changes in all nature.
Fall is the next-best season. As for summer, it seems to be a good time to take a long vacation for thinking.
(33)

A. It is more or less affected by the seasons,
B. It stays the same in all seasons.
C. It's a bit higher in summer than in winter.
D. It varies from day to day,

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