13．When _______ to danger，men tend to increase blood pressure，_______ nervous or anxious．（　�。�
A．exposed； feelingB．exposed； felt
C．exposing； feltD．exposing； feeling

分析 考查非謂語(yǔ)動(dòng)詞．句意：當(dāng)人們暴露于危險(xiǎn)時(shí)，人常常血壓上升，感覺緊張焦慮．

解答 答案A．根據(jù)短語(yǔ)be exposed to，expose和men邏輯上是動(dòng)賓關(guān)系，所以用exposed，when exposed to danger在從句中做時(shí)間狀語(yǔ)，feel和men之間是邏輯上的主謂關(guān)系，所以用feeling，做伴隨狀語(yǔ)，故選A．

點(diǎn)評(píng) 非謂語(yǔ)動(dòng)詞一定弄清楚邏輯關(guān)系．

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