第20题: [单项选择]Not only ______ very well, but also ______ well. A. she cooks; does she dance B. she cooks; she dances C. does she cook; she dances D. does she cook; does she dance 参考答案:C 答案解析:[考点] 句法结构。 [解析] not only放在句首时,主句要倒装。但but also后分句不必倒装。
第23题: [单项选择]釉柱的直径平均为()。 A. 4~6μm B. 8~10μm C. 20~50μm D. 6~10μm E. 20~30μm 参考答案:A 答案解析:[解析] 釉柱的直径平均为4~6μm。由于釉质表面积比釉牙本质界处的大,因此,釉柱的直径在表面者较深部的稍大。釉柱的横断面呈鱼鳞状。