题目

9.   He is fond of literature, classics in p_____________. 10.  We can all help rair pollution. For example, walk or ride a bike to school. 11.  There are several _______ in the pages of figures. (fault) 12.  You can r it to the police if someone has broken into your house. 13.  After learning the biology, many students have learned about the ________ (进化) of plants and animals. 14.  It r_________ to be seen whether the headmaster will approve our plan or not. 15. There are 12 counties and  ________(区) in our city. 16.  Why must we get up so early before the s________t℃时，在饱和硫酸铜溶液中加入少量白色硫酸铜粉末，溶液保持t℃，下列叙述正确的是（　　）①有蓝色晶体析出  ②饱和溶液总质量不变   ③饱和溶液中溶质质量减少  ④饱和溶液中溶剂质量减少  ⑤饱和溶液的质量分数减少   ⑥饱和溶液的浓度不变．A．①③④⑥B．①③④⑤C．①②⑥D．①⑤