问题
单项选择题
盐酸的（），主要用于清除建筑时滞留下的水泥，（），效果非常明显。
A、PH=3，油漆
B、PH=5，污渍
C、PH=1，石灰斑垢
D、PH=2，脏迹
答案
参考答案：C
搜题请搜索小程序“爱下问搜题”
盐酸的（），主要用于清除建筑时滞留下的水泥，（），效果非常明显。
A、PH=3，油漆
B、PH=5，污渍
C、PH=1，石灰斑垢
D、PH=2，脏迹
参考答案：C
| 完形填空。 | ||||
| Around twenty years ago I was living in York. 1 I had a lot of experience and a Master's degree, I could not find 2 work. I was 3 a school bus to make ends meet and 4 with a friend of mine, for I had lost my flat. I had 5 five interviews (面试) with a company and one day between bus runs they called to say I did not 6 the job. "Why has my life become so 7 ?" I thought painfully. As I pulled the bus over to 8 a little girl, she handed me an earning 9 I should keep it 10 somebody claimed (认领) it. The earring was painted black and said "BE HAPPY". At first I got angry. Then it 11 me - I had been giving all of my 12 to what was going wrong with my 13 rather than what was right! I decided then and there to make a 14 of fifty things I was happy with. Later, I decided to 15 more things to the list. That night there was a phone call for 16 from a lady who was a director at a larger 17 . She asked me if I would 18 a one-day lecture on stress (压力) management to 200 medical workers. I said yes. My 19 there went very well, and before long I got a well-paid job. To this day I know that it was because I changed my way of 20 that I completely changed my life. | ||||
|