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第7题:
Retirees are more generous in spending money.
They can employ more gerontologists.
The elderly possess an enormous purchasing power.
There are more elderly people working than before.
第8题:
Because many families are divorced.
Because government aid is now rare.
Because their wages are low.
Because the cost of living is rising.
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第12题:
business management should be included in educational programs
human wisdom has accumulated at an extraordinarily high speed
human intellectual development has reached new heights
the importance of a broad education should not be, overlooked
第13题:
Enthusiastic.
Pessimistic.
Optimistic.
Cautious.
第14题:
To practice her presentation in front of him.
To find out who her audience will be next time.
To try not to think about her audience.
To learn from children.
第15题:
At a doctor’s office.
In a biology lab.
At a radio station.
In a lecture hall.
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第18题:
If we focus our attention on the thing, we might forget another.
Memory depends to a certain extent on the environment.
Repetition helps improve our memory.
It we keep forgetting things, we’d better return to where we were.
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第20题:
How destructive tidal waves are.
The cause of tidal waves.
What a true tide is.
Why there is seaquake.
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