Some (research) suggests (what) there is a (link between) the body’s calcium bal

游客2025-05-11 22

问题 Some (research) suggests (what) there is a (link between) the body’s calcium balance (and) tooth decay.

选项 A、research
B、what
C、link between
D、and

答案 B改为that

解析 that从句做suggest的宾语。

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