黃金閱讀23篇 (隕石跟恐龍) - 英檢

Meteorite Impact and Dinosaur Extinction
23篇的最後一題(結論題)14題

有兩個選項
2)An iridium-enriched sediment layer and a large impact crater in the Yucat
provide evidence that a large meteorite struck Earth about 65 million years
ago.

3)The site of the large meteorite impact at the end of the Cretaceous period
was identified in 1990.

我是選擇了3
我看不出來3哪裡錯了
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附上段落原文

By 1990 geologists had located the impact site itself in the Yucat region of
Mexico. The crater, now deeply buried in sediment, was originally about 200
kilometers in diameter.


當時候選很久 不知道寫過的版友當時後是怎麼想的

謝謝 :D

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