【題目】Laughter produces short-term changes in the function of the heart and blood circulation,_________heart rate and oxygen consumption.

A. increasing B. to increase C. having increased D. being increased

【答案】A

【解析】考查非謂語動(dòng)詞。句意:笑可以使心臟運(yùn)轉(zhuǎn)和血液循環(huán)產(chǎn)生短期改變,增加心率和耗氧量。根據(jù)與邏輯主語Laughter是主動(dòng)關(guān)系,故用現(xiàn)在分詞作狀語,起補(bǔ)充說明的作用。故選A。

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