下面哪一种关于约束性价格上限的表述是正确的？（） A.由于价格上限引起的过剩在短期中

男童，8月龄。高热6天，伴咳嗽气促，R60次／分，精神萎靡，面色苍白，左肺背叩诊浊，偶闻少许中细湿啰音，HR178次／分。胸片示左上肺大片阴影伴肺气肿，血WBC9.6×10⁹／L，中性粒细胞0.56。

该患儿病情加重，R88次／分，不规则，喘憋，肺部大量细湿啰音，发绀明显，经导管吸氧无改善，进一步应做何种检查（）。

A.复查血常规

B.动脉血气分析

C.胸部X线摄片

D.胸部B型超声

E.胸腔CT扫描

查密度表，比较体积相同的酒精和汽油，质量较大的是______；比较质量相同的铅块和铁块，体积较大的是______．

I arrived late one night on a business trip, so I decided to have dinner in the hotel I stayed in. As I was finishing my meal, an elderly couple came in. They were holding hands and had lovely smiles on their faces. They sat three tables from me. I was amazed at the love they showed for each other. It stuck me because it was shortly after ending a 20-year marriage and I still had pain in my heart.

My waiter was also their waiter. As I paid my bill, I asked what their bill was. He told me, and I gave him $40 to pay their bill. He asked if I knew them and I told him “No, I just wanted to repay them for the love that they were showing to each other,” and then I left.

The next day I entered the restaurant again. After I had been seated, the waiter who served me the night before told me that the strangest thing happened after I left the restaurant. When the elderly couple went to pay for their meal, they were told that it had been paid. The waiter just told them what I said. They were amazed. They looked around, asked for the bill of two young couples who were seated together, paid their bill and left.

I smiled and ordered my meal. About 45 minutes later, I finished my meal and was about to head out, but my waiter was nowhere to be found. I explained to the hostess that I needed to pay for my meal and hurry to the airport. She smiled and explained that I would not have to pay, because she felt she should pay for my bill because of the joy brought to the faces of the elderly couple and the amazement of the young couples.

When I told her that they didn’t have to do that, she said with a smile “Love creates Love.”

小题1:From the first paragraph we know the writer must feel __________.

A．pleased

B．worried

C．sad

D．nervous小题2:The elderly couple paid the bill of the two young couples because they __________.

A．knew the two young couples

B．were happy to pass the love they got

C．were always ready to help poor people

D．wanted to invite the young people to the meal小题3:The writer’s purpose of writing the passage is to __________.

A．suggest true love never dies

B．share an interesting experience

C．encourage us to help people in need

D．prove a show of love really makes a difference

提问：孕妇患妊娠期高血压疾病属哪一度

A．轻度子痫前期

B．妊娠期高血压疾病

C．产前子痫

D．重度子痫前期

E．妊娠合并慢性高血压

( )是公安工作的基本方法。

A．从群众中来，到群众中去

B．一切依靠群众

C．全心全意为人民服务

D．一切依靠党