8MV光子全防护需要多厚的铅皮（） A.5cm B.6.5cm C.7cm D.8c

光缆线路维护与工程的界面是：（）。

用峰值骨量或正常成人骨矿密度的2个标准差来判断（）

A.低骨量

B.骨质疏松症

C.严重骨质疏松

D.骨折阈值

E.高转换型骨质疏松症

如图为下丘脑对人体部分生理活动调节的示意图，图中英文字母表示激素，甲、乙、丙、丁表示内分泌腺，数字表示部分生理活动，其中，激素C的分泌受H的调控影响。虚线部分表示神经调节。请据图回答下列问题：

(1)激素B的名称是________，图中与激素A有协同作用的激素是_______(填字母)。

(2)从图中的调控关系判断，G可能是________，丙可能是________。

(3)根据医嘱，糖尿病病人必须避免情绪激动，请利用所学知识说明医嘱的依据_______________。

(4)F物质只能作为丁的信号，与丁细胞膜上具有特定的________(物质)有关。寒冷刺激后，D物质对体温调节的具体作用主要是________________。

(5)当受到寒冷刺激时，除了图中所示的腺体的生理活动发生改变外，采用物理方式调节体温的效应器有____________。

It was the Year from Hell-September 1993 to September 1994-the dog died, my marriage of 24 years ended, and my house burned down. I had moved into a new rented house with my youngest son, after my husband and I split up. We'd been in the house just six weeks. I went to a dinner party one night, and as I drove home, I saw helicopters hovering in the general vicinity of my new home. Smoke was billowing into the sky, and sirens were wailing. As I got closer, I thought, Wouldn't it be awful if that was my house? Then I turned the corner, and sure enough, it was my house.

I was devastated. It had been such a horrible year, and now everything I owned had gone up in smoke. Mementos, baby pictures, family keepsakes, clothes, furniture-everything was destroyed. My marriage was gone, my dog was gone, my home was gone, and all my worldly possessions, except my car and the clothes on my back, were gone too.

My son and I stayed with a friend for a couple of nights. Then my friend Gail heard about the fire, called me up, and said, "Come move into my house. I have seven bedrooms and five bathrooms-plenty of space for you and your son." It was a sprawling ranch house on a double lot in La Jolla, with an ocean view, to boot. Gail had three kids at home, but there was still plenty of room for me and my son, Sutton. Her offer was a godsend. Little did I know that her offer of a temporary place to stay would turn into a living arrangement that lasted two and a half years.

Gail and I had a lot in common. We had both been raised Catholic and our unconscious minds had been programmed the same way-we saw ourselves as good little Catholic girls who were gonna stay married forever. But both of our husbands decided they didn't want to be married anymore, and so here we were, two single mothers, dazed, confused, and in a fog. We had followed the rules... why were we not happy? Gail and I spent the next couple of years sorting out a lot of things together.

After we moved in, I soon began to look for a permanent place to live. After a few weeks, Gail said, "Please don't leave. I've never had so much freedom!" Having me in the house meant someone to help take care of her kids, someone to share cooking and gardening, and someone to share day-to-day life. She loved having me there, and I loved being there. So we stayed.

It was an important chapter in my life. Gail and I gardened together, talking back and forth as we worked in the soil. We both needed time to heal from our divorces, time to sort out the confusion, time to get some clarity on the past and some focus on the future. It was a time of deeper insight and spiritual growth for both of us. Over time, I grew to realize how strong I really was, how even-tempered, and how I really could get my act together and go on with my life.

Gail's generosity was more than anyone could ever ask or expect from a friend. She gave me a safe haven in which to mourn and heal and grow into the next chapter of my life. She showed her love in countless ways. I am eternally grateful to have a friend like Gail.

I'm also grateful for the lessons I learned from the fire and the other losses that came so suddenly, so fast. Much to my surprise, I found gratitude among the ashes. I was tested sorely-literally trial by fire. But, like a phoenix, I rose from the ashes strong and whole. I would not be the person I am today if not for that Year from Hell.

小题1:Why did the writer say Sep 1993 to Sep 1994 was the Year from Hell?

A．She got divorced from her husband

B．Both of her houses were burned down

C．She met some misfortune one after another

D．Her dog was killed in the big fire小题2:What did the writer and Gail have in common?

A．Both of them had one son

B．Both of them believed in the same faith

C．Both of them lost the home

D．Both of them decided to divorce小题3:How did the writer spend the days with Gail?

A．She looked after the 4 kids alone

B．She planted some flowers with Gail

C．She shared the same bedroom with Gail

D．They did some cleaning together小题4:which is the right order of the following events?

①、She wanted to find a permanent house

②、She shared cooking with Gail

③、She went to a dinner party one night

④、She stayed with a friend for a couple of days

⑤、She lost her dog

A．③⑤④①②

B．④①⑤③②

C．③④②⑤①

D．①③⑤④②小题5:What is the best title for the text?

A．Generosity from a friend

B．Recover from the pain

C．The Year from Hell

D．Gratitude among the ashes

下列过程中，属于反射的是[ ]

A．含羞草的叶子受触碰后合拢    

B．草履虫可以躲避盐水的刺激   

C．天热时人会出较多的汗    

D．皮肤擦伤后出血，血液会自然凝固