患者，男性，50岁。生气后突感前胸闷痛，有压榨感，同时疼痛牵涉

搜题请搜索小程序“爱下问搜题”

问题单项选择题

患者，男性，50岁。生气后突感前胸闷痛，有压榨感，同时疼痛牵涉至左臂休息后自行缓解，约3分钟。最可能的诊断是

A．肋间神经痛
B．急性心肌梗死
C．急性左心衰
D．心绞痛
E．急性肺梗死

答案

参考答案：D

完形填空

It was very cold at 7 am that Monday morning in Harvard Square. I was nearly mad because I had just         the bus, and was standing out in the freezing cold waiting for the next one. My mind was filled with anxiety and        thoughts. “Why didn’t I leave two minutes       ?”
       the others at the bus stop was a woman in her fifties wearing a old-fashioned hat, an old pair of boots and a dark coat, but she had no       . Another woman, who looked to be in her middle twenties, said to the        woman, “Your hands must be very cold. You’ll get frostbitten (冻伤的) in this weather.” She        her heavy backpack to the ground, bent down, and began        for something inside her backpack. The older woman looked       and said, ”Oh no, that’s OK. I’m        .
The younger woman continued to search        in her backpack and the older woman kept repeating, “Don’t        yourself. I’ll be all right.” After       seemed like so many minutes, the younger woman        a pair of purple gloves. She took the older woman’s hands and gently      a glove on each hand, covering one finger       . The older woman said, “Thank you. You’re so sweet.”
Though I was very cold, the act of        gave ma a warm feeling inside. It also motivated me to buy five pairs of purple gloves, similar to hers, and        them in my bag, just in case I        someone who was in great        on a cold day.

查看答案

问答题

仔细阅读下边的内容，用一句话概括出材料内容。（不超过15个字）

　　城市逐年发展，市民人数也随之增加。人口集中，空气污染，氧气不足，噪音严重……因此，必须花费力气来绿化城市，树木就是城市的肺。

　　树木能清除空气中多余的二氧化碳，减少灰尘。树叶表面有一层茸毛，能起到吸尘器的作用，特别是榆树，它吸尘能力比杨树高6倍。

　　城市空气中的细菌比森林里多得多，消灭细菌也要靠树木的帮助，树木能产生杀菌的物质，例如痢疾菌，只要一碰上杨树叶，立即死亡。

　　树木能防风，降低风速。如果植树布局好，还能减少噪音。夏天，树木能帮助降温，使房屋遭暴风晒，抵抗强烈的日光辐射。最热的时候，花园里或大树底下的温度比周围温度低7-80C。

　　病人在公园里散步之后，呼吸，心脏活动及新陈代谢都马上会有显著的改善……

_______________________________

查看答案