今天我们带大家来看一下

这一道高频RA新题：

应同学们要求，每一段RA都加了背景知识帮助大家更好地记忆和消化噢~

caffeinated research

Researchers gathered 160 uncaffeinated adults, people who consumed less than 500 milligrams of caffeine a week. These decaf subjects looked at pictures of various objects, then took either a placebo or a pill containing 200 milligrams of caffeine. That’s roughly the amount you'd get from two cups of coffee.

请同学们首先注意容易读错的生词和音标：

Caffeine ['kæfin]

Milligram ['mɪlɪɡræm]

Placebo [plə'sibo]

Roughly ['rʌfli]

正确的RA断句及重音：

Researchers gathered 160 uncaffeinated adults, / people who consumed less than 500 milligrams of caffeine a week. // These decaf subjects looked at pictures of various objects, / then took either a placebo or a pill containing 200 milligrams of caffeine. // That’s roughly the amount you'd get from two cups of coffee.

来听一下Stephii的语音解析：