20. Rainforests are home to many plants and animals. If the rainforests disappear, many of these species ______ on earth.
(A) are extinct
(B) were extinct
(C) have been extinct
(D) will be extinct

答案:登入後查看
統計: A(28), B(58), C(131), D(500), E(0) #1709936

詳解 (共 2 筆)

#2511423

(A) are extinct 滅絕(敘述)
(B) were extinct 滅絕了
(C) have been extinct 已滅絕
(D) will be extinct 將滅絕

 
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#5113401
雨林是許多植物和動物的家園。如果熱帶雨林消失,地球上的許多物種就會______。
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私人筆記 (共 1 筆)

私人筆記#2499986
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