Asthereislesscoalandoil,scient

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更新 2022-09-03
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As there is less coal and oil, scientists are exploring new ways of making use of _____ energy, such as sunlight, wind, and water for power and fuel.

A．primary

B．alternative

C．instant

D．unique

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The church tower which_________will be open to tourists soon. The work is almost finished.

A．has restored

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In ancient times, people rarely travelled long distances and most farmers only travelled ___________ the local market.

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---Sorry, Professor Smith. I didn’t finish the assignment yesterday.
---Oh, you___________ have done it as yesterday was the deadline.

A．must

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Every few years, the coal workers ___________ their lungs X-rayed to ensure their health.

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