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Simon failed the exam again. Because computer games ________ too much of his time.
1年前
1年前
About a year ago, a couple with three children moved into the apartment next door to me.
1年前
近视眼只能看清楚______的物体,看不清楚______的物体,这是因为近视眼的成像成在了视网膜之______,应给他配______透镜矫正视力.
1年前
下图中A,B,C,D,E,F分别表示初中化学常见的六种物质,其中C为胃液的主要成分,B可用于造纸、纺织
1年前