从事货物进出口或者技术进出口的对外贸易经营者，应当向国务院对外贸易主管部门或者其委托

关于气道内支架植入术的适应证，正确的是（）

A.支气管内膜结核引起的气管狭窄首选金属支架植入

B.段以下支气管狭窄的重建

C.气管食管瘘的封堵

D.大咯血止血

E.气管软化症管壁支撑

生物进化的证据——化石，古代生物的     _______  ，   _______  或    _______     。

脊椎动物化石出现的顺序：比较古老的地层中出现的是  ______    ，然后依次出现的是    ___   ，__________，________。始祖鸟化石，身体结构既和    _________动物有相同之处，又和   _____    有相同之处。

对乙酰氨基酚不宜用于

A．头痛

B．牙痛

C．神经痛

D．肌肉痛

E．胃肠绞痛

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.

The underlined part in the fourth paragraph suggests that my sister（）

A．is happy to clean windows

B．loves to clean used windows

C．is fond of cleaning used windows

D．likes to clean windows as my mother did

信号丢失的的英文缩写是（）

A.LOF

B.LOP

C.LOS

D.OOF