The Immigration Restriction Act became known as the White Australia policy because it used

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The Immigration Restriction Act became known as the White Australia policy because it used dictation test to deny entry to______.

A.non-white immigrants

B.white immigrants

C.black immigrants

D.Asian immigrants

请帮忙给出正确答案和分析,谢谢!

热搜:a是b的充分条件,b是a的必要条件吗