5. They are presented with a ________of human experiences and come to respect other ways of thought and living.
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6. The rainfall is increased across South America, ________ floods to Peru.
7. While enriching their imagination, books _______ their outlook,develop a fact-finding attitude and train them to use leisure properly.
8. That’s why a growing number of hospitals now depend upon physicians who _________ in pain medicine.
9. Rats are often with spreading disease rather than preventing it. (以字母a开头,表示与……相关联)