合金钢是指在碳素钢中加入某种特定和合金元素而使其获得一定性质的钢。

农药生产许可证的注销原因是什么？

读图完成问题。

如果图中海上发生地震，海面轮船上的人感觉到（）

A.先上下颠簸，后左右摇晃

B.先左右摇晃，后上下颠簸

C.上下颠簸

D.左右摇晃

实热证汗出特点是（）

A．动则汗出

B．蒸蒸汗出

C．半身汗出

D．汗出如油

E．睡时汗出

耐张型杆塔的断线情况为无冰、无风，同一档内断任意两相导线或任意一根地线。导/地线断线张力取最大使用张力的百分数，其数值为( )。

A．45/75；
B．70/80；
C．75/85；
D．80/90。

All her life, my mother wanted busy children. It was very important that her house should remain at all times clean and tidy.
You could turn your back for a moment in my mother’s house, leave a half written letter on the dining table, a magazine open on the chair, and turn around to find that my mother had "put it back where it belonged," as she explained. My wife, on one of her first visits to my mother’s house, placed a packet of biscuits on an end table and went to the kitchen to fetch a drink. When she returned, she found the packet had been removed. Confused, she set down her drink and went back to the kitchen for more biscuits, only to return to find that her drink had disappeared. Up to then she had guessed that everyone in my family held onto their drinks so as not to make water rings on the end tables. Now she knows better.
These disappearances had a confusing effect on our family. We were all inclined to forgetfulness, and it was common for one of us, upon returning from the bathroom, to find the every sign of his work in progress had disappeared suddenly. "Do you remember what I was doing" was a question frequently asked, but rarely answered.
Now my sister has developed a secondhand love of clean windows, and my brother does the cleaning in his house, perhaps to avoid having to be the one to lift his feet. I try not to think about it too much, but I have at this later time started to dust the furniture once a week.

This passage mainly tells us that ______.

A．my mother often made us confused

B．my family members had a poor memory

C．my mother helped us to form a good habit

D．my wife was surprised when she visited my mother