科学解释能力是科学素养的重要组成部分。下列对实验现象或操作的解释不合理的是( )

题型:选择题

问题:

科学解释能力是科学素养的重要组成部分。下列对实验现象或操作的解释不合理的是(   )

 操作及现象解释
A在AgI饱和溶液中滴加0.1mol·L—1NaCl溶液,出现白色沉淀AgCl的溶解度或Ksp比AgI小,生成更难溶的AgCl沉淀
B盛放浓NaOH溶液的试剂瓶用玻璃塞久后,瓶塞很难打开NaOH腐蚀玻璃,生成的硅酸钠将瓶口与瓶塞粘在一起
C配制FeC13溶液时加入适量盐酸酸化抑制Fe3+水解,防止所配制溶液变浑浊
D将氯气通入紫色石蕊溶液中,溶液先变红,后褪色氯气与水反应生成盐酸和次氯酸,溶液显酸性使石蕊溶液变红,次氯酸具有漂白性,使溶液褪色
 

考点:元素的性质生活中的元素(常量元素、微量元素)
题型:选择题

在头部,当前发际上0.5寸,神庭旁开1.5寸的腧穴是:

A.本神

B.头临泣

C.曲差

D.眉冲

E.头维

题型:选择题

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

题型:选择题

患者男性,24岁。反复发作性咳嗽、喘息10年余,再发加重3h。查体见意识模糊,口唇发绀,双肺呼吸音明显减低,未闻及干湿哕音,心率128/min,可触及奇脉。

诊断及病情程度确定后应采取的最有效措施是

A.甲泼尼松龙静滴+氨茶碱静滴+氧疗

B.特布他林口服+氨茶碱口服+氧疗

C.亚胺培南静滴+氨茶碱静滴+氧疗

D.沙丁胺醇吸入+甲泼尼松龙静滴+氨茶碱静滴+氧疗

E.倍氯米松吸入+氨茶碱静滴+氧疗

题型:选择题

在天然水的离子浓度和温度条件下,对于强碱性阴树脂,与水中阴离子交换的选择性次序为:()

A.选项A

B.选项B

C.选项C

D.选项D

题型:选择题

根据大气温度垂直分布的特点,在结构上可将大气分为()

A.对流层

B.平流层

C.中间层

D.热成层

E.散逸层

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