【題目】We are not ready to go into production yet.The new switch mechanism isn't fully__________.( )
A.worked out
B.left out
C.turned out
D.tested out

【答案】D
【解析】考查動詞短語辨析。根據(jù)句意:我們尚未準(zhǔn)備好投入生產(chǎn)。新的開關(guān)裝置還沒有完全檢驗好。work out 解決,計算出;turn out 證明是,結(jié)果是;leave out 遺漏,省略;test out 檢驗,試驗。

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