实验室测量质量的工具是 ______．（1）把它放在 ______桌面上；（_爱下问搜题

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问题填空题

实验室测量质量的工具是 ______．

（1）把它放在 ______桌面上；

（2）把 ______放在标尺左端的零刻度线处，调节横梁上的 ______，使横梁平衡（注意左偏右调）．

（3）将被测物体轻放在 _______盘上，估测物体的质量，将适当的砝码轻放在 _______盘上；

（4）从大到小增减 ______，并移动 ______，直到横梁恢复平衡；

（5）物体的质量=右盘中砝码的总质量和游码所对的 ______．注意点：使用天平不能超出它的 ______，用 ______夹取砝码时要轻拿轻放，另外要保持天平的干燥、清洁．

答案

（1）把天平放在水平桌面上；

（2）调节天平平衡前，要将游码移到标尺左端的零刻线处，然后调节平衡螺母使天平平衡；

（3）测量物体时，被测物体放在左盘，砝码放在右盘；

（4）给天平的右盘加减砝码时，要按照从大到小的顺序依次添加；当加减砝码不能使天平平衡时，要通过移动游码来使天平平衡；

（5）物体质量等于砝码质量加游码示数，使用天平测量时，被测物体的质量不能超过天平的测量范围，加减砝码要用镊子．

故答案为：天平；水平；游码；平衡螺母；左；右；砝码；游码；刻度值；测量范围；镊子．

完形填空

I used to live in a separate room. I loved living   36  . But one day it all changed when my brother Mike asked to 37  my room. At first, my parents said “no” to him, but at last my mother 38  . I cried and begged my parents not to do this, 39  it didn’t work.
As soon as Mike entered my room, my room began to become 40  . To my anger, he often left his unwashed clothes everywhere!
One evening, I was doing my homework on my computer while Mike was listening to music. Later, I left my 41 to get some water. A shock was 42  me when I returned. He had used my computer to play games. I had 43    to save the homework. Sadly, he closed the program 44  saving it--- all my effort had disappeared! I shouted at him at the top of my 45  . He cried a lot as my mother   46 him. My mother also asked him to leave my room 47 .
Then I did my homework once again. At 11:00PM, I 48  it. I was about to turn off my computer when I saw the 49  of my brother that he had put on my table. I looked at his lovely face and remembered how he was crying when my mom punished him. I really felt 50  for him.
I went to him. He was 51  in my parents’ bed. I kissed his forehead. He woke up, 52 and said, “I’m sorry, I won’t bring you 53  again.”
I was so 54   and I hugged him, saying, “From now on, my room is not only 55  . It is ours!”

D．differently

A．waiting for

B．looking through

C．looking after

D．thinking of

A．information

单项选择题

患者女性，54岁。慢性肾炎病史20余年，头痛、食欲减退、恶心1个月。查体：血压190／110mmHg，重度贫血貌，双下肺可闻及湿啰音，心界向左下扩大，主动脉瓣区可闻及2／6级收缩期吹风样杂音，腹部移动性浊音阳性，双下肢水肿。初步诊断（）

A.急进性肾炎并急性肾衰竭

B.慢性肾炎并急性肾功能不全

C.高血压肾病并急性肾功能不全

D.慢性肾炎并慢性肾衰竭

E.高血压肾病并慢性肾衰竭