水解酸化池的运行原理及其特点。

根据短文内容和首字母提示填空。

    The Internet has become part of people's life. A report (1)s             that 38% of the students often

use the Internet. Most of them get useful (2)i             and use the Internet to help their studies. But many

students don't use it in a good way. Some (3)p             games too much, some visit websites they should

not look at. So bad things may happen if students (4)s             too much time on the Internet. 

    It's important for students to use the Internet in a good (5)w            . Now we have textbooks which

use many examples to teach students how to (6)u             the Internet well. They give useful advice, such

as it's good to (7)r            news or find helpful information to study. Some students also (8)m            friends

on the Internet. But if you want to have a face-to-face meeting (9)w            your online friends, let your

parents know and meet in a (10)s            place.

一般人不用坚硬物掏耳朵，是为了防止_________，有时巨大的声音会使耳膜穿孔，这时会造成_________，可以用__________方式感知声音或借助于助听器。

某女，31岁。结婚7年，曾人工流产，近2年未孕，少腹时作痛，痛时拒按，月经推后量少，色紫暗，有血块，经前期腹痛加重，舌暗苔薄白、脉弦。

治疗首选方剂 （）

A.开郁种玉汤

B.丹栀逍遥散

C.逍遥散

D.膈下逐瘀汤

E.桃红四物汤

孙中山向南京参议院提出辞职，是在

A．袁世凯控制清政府前

B．南北议和的过程中

C．袁世凯到南京就任时

D．宣统帝下诏退位后