og题目求解

Kristan · 发表于 2022-10-31 17:13:15

2. According to scientists, human expansion and the human appropriation of Earth's finite resources is the cause of what may be the most sweeping wave of species extinctions since the demise of the dinosaurs 65 million years ago.
(A) expansion and the human appropriation of Earth's finite resources is
(B) expansion and human appropriation of Earth's finite resources are
(C) expansion and its appropriation of Earth's finite resources is
(D) expansion, along with their appropriation of Earth's finite resources, is
(E) expansion, along with its appropriation of Earth's finite resources, are

这里为什么是are the cause 而不是are the causes ，这里不是有两个因素吗

[SC悬赏令] og题目求解

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