Agriculture is the country’s chief source of wealth, wheat______by far the bigge

游客2025-04-01  1

问题 Agriculture is the country’s chief source of wealth, wheat______by far the biggest cereal crop.

选项 A、is
B、been
C、be
D、being

答案 D

解析 句子前后两部分存在逻辑上的并列关系,但因为并未用连接词and,所以后半句要用独立主格结构,即being。
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