题目内容

Listen to the statement and circle the appropriate letter. Which is not the disadvantage of use of fossil fuels

A. high cost
B. greenhouse gas emission
C. burning fast

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Listen to the conversation and complete the following sentences with NO MORE THAN TWO WORDS. Reading __________ can help Ailie find out an attractive topic.

Listen to the statement and circle the appropriate letter. Except diesel, most cars run on __________ .

A. oil
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