题文
Estuaries provide both recreation and education for human beings. They also _____ the economy through tourism and fishing.
| A．contribute to | B．adapt to | C．respond to | D．apply to |
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Estuaries provide both recreation and education for human beings. They also _____ the economy through tourism and fishing.
| A．contribute to | B．adapt to | C．respond to | D．apply to |
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