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The biggest risk of a high -sodium diet is the effect_____ has on blood pressure and heart health?
A.it B.which C.what D.that
人气:383 ℃ 时间:2020-02-05 13:20:51
解答
it前省略了that.此句是以that引导的从句,it形式主语不可省略,所以只能选A.
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