his ( )in the stock market has made him a rich man.A.interference B.interaction C.investigation D.investment
问题描述：
his ( )in the stock market has made him a rich man.
A.interference
B.interaction
C.investigation
D.investment
答
选 D .investment 投资.
句意：他在股票市场的投资使他成为一个有钱人.
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