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精彩回答
He ______ (lie) in bed all day long because he had a headache.
11个月前
--- Why didn’t you tell me the truth that day? --- I _______, but you ______ for Beijing.
1年前
铁的密度是7.9g/cm³,合______kg/m³,将质量为237g的实心铁球浸没在盛有150cm³酒精的量筒中,液面将升高到______cm³处.
1年前
电冰箱是重要的家用电器之一,当制冷物质环戊烷流经冷冻室时就会发生______(液化/汽化)现象,并______(吸收/放出)热量.
1年前
Talk to your teacher and you will get help ________ you have a problem.
1年前