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- 2He is a s__ man.He never speaks to others.
- 3She said that she_____(come)that week
- 4)his bike to the river every day.
- 5NaHCO3和Na2CO3的混合物100g和固体NaOH 20.0g混合加热,充分反应后,冷却、干燥称量剩余固体为95.5g.求原混合物中Na2CO3的质量分数.
- 6揭阳第三中学高二级要从4名男生和3名女生中选出4人参加迎新座谈会,若这4人中必须既有男生又有女生,不同的选法共有_种.
- 7三国鼎立、鼎盛时代中的鼎字的义项有:一、古代烹煮用的器物.二、大.三、正当,正在.分别选什么?
- 8选择:I'm sorry,___I don't want to see a movie with you this afternoon. A.and B.so C. but.
- 9测量大气压中的吸盘实验的实验原理是什么
- 10It isn't easy_____us_____follow English-language videos.A of to B to to C for to D to for