20xx秋九年級(jí)英語全冊(cè) unit 13 we’re trying to save the earth tuesday復(fù)現(xiàn)式周周練課件 新人教版-全文預(yù)覽
【正文】 6. ___________ down trees， so elephants are losing their homes. On the 7. ___________ hand， people also kill elephants for their ivory. This is not only cruel， (Section A 3a— 3c) but also 8. ___________ to the environment. It is reported that④ today the number of elephants left in the world is about 3， 000. In fact, there are fewer elephants now, so this kind of situation will bring danger to the food chain. In 1989， an international agreement (Section A 3a— 3c) limited(限制 )the trade in ivory and 9. ________ their best to protect elephants from being killed， but elephants are still being
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