问题 实验题

在用天平和量筒测量盐水密度的实验中:

 (1)调节天平的步骤是_______________________________。

A.组装好天平,把天平放在水平台面上;

B.调节天平的平衡螺母,使天平横梁水平平衡;

C.把游码置于标尺的零刻线处。

(2)实验所依据的公式是_____________。

(3)实验过程:

a.在玻璃杯中盛上盐水,放在调节好的天平左盘上称量,当天平重新平衡时,读出砝码和游码的读数为130.2g(已填入下表中) ;

b.把玻璃杯中的盐水倒入量筒中一部分如图,记下量筒中盐水的体积并填入下表中;

c.把玻璃杯和剩余盐水放在天平左盘上称量,当天平重新平衡时,所用砝码和游码位置如图所示,将玻璃杯和剩余盐水的质量填入下表中。

d.计算出盐水的质量和密度,填入下表中。

答案

(1)ACB

(2)ρ=m/v

(3)58.2;72;60;1.2×103

阅读理解与欣赏

课内现代文阅读(17分)

我说道:“爸爸,你走吧。”他往车外看了看说:“我买几个橘子去。

你就在此地,不要走动。”我看那边月台的栅栏外有几个卖东西的等着顾客。

走到那边月台,须____(a 走,b 跑,c 跳,d 穿)过铁道,须跳下去又爬上

去,父亲是一个胖子,走过去自然要费事些。我本来要去的,他不肯,只好

让他去。我看见他带着黑布小帽,穿着黑布大马褂,深青布棉袍,蹒跚

地走到铁道边,慢慢探身下去,尚不大难。可是他要穿过铁道,要爬上那边

月台,就不容易了。他用两手___(a抓, b揪, c攀, d握)着上面,两脚

再向上缩;他肥胖的身子向左微倾,显出努力的样子,这时我看见他的背影,

我的泪很快地流下来了。我赶紧拭干了泪。怕他看见,也怕别人看见。我再

向外看时,他已抱了朱红的橘子往回走了。过铁道时,他先将橘子散放在地

上,自己慢慢爬下,再抱起橘子走。到这边时,我赶紧去搀他。他和我走到

车上,将橘子一股脑儿放在我的皮大衣上,于是扑扑衣上的泥土,心里很轻

松似的。过一会说:“我走了,到那边来信!”我望着他走出去。他走了几步,

回头看见我,说:“进去吧,里边没人。”等他的背影混入来来往往的人里,

再找不着了,我便进来坐下,我的眼泪又来了。

小题1:选段节选自课文《       》,作者是        。(2分)

小题2:在文中两个空缺处选词填空(只填序号)。(2分)

小题3:用横线划出具体描绘父亲“要爬上那边月台,就不容易了”的语句,并说说这样描写的作用是什么? (2分)

_________________________________________________________________

                                                                 

小题4:文中两次写“我”流泪,分别表达了“我”当时怎样的心境?(2分)

_________________________________________________________________

__________________________________________                                                   

阅读理解

Michelle Obama is the first lady of American fashion, appearing on the cover of the March issue of Vogue.

Every first lady since Lou Hoover—except Bess Truman—has been appeared in the high-fashion magazine, but Mrs. Obama is only the second to appear on the cover. She appears wearing a silk dress by Jason Wu.

Vogue’s editor Andre Leon Tally recalled his interviews with Mrs. Obama ahead of US president Barack Obama’s swearing-in ceremony(就职典礼). “One of the best experiences of my life .” “She is so easily reached, natural and normal.” he said.

Mrs. Obama described her role as “Mom in chief” to 10-year-old Malia and 7-year-old Sasha. “I’m going to try to take them to school every morning, as much as I can,” she said. “But there’s also a measure of freedom. And clearly there will be time I won’t be able to drop them off at all. I like to appear in my kids’ school. I want to know the teachers; I want to know the other parents.”

Being in Vogue, though, the chat finally turns to clothes. “I’m not going to pretend that I don’t care about it,” she said. “But I also have to be very practical. Someone will always not like what you wear---people just have different tastes. ”

Most cover models have their clothes chosen for them by Vogue, or at least editors work as advisers. Not this time. “She doesn’t need any help. She loves fashion and knows what works for her,” Talley said. “She has never had a talk with me about, ‘What do you think?’ or ‘How does this like?’ And I’m glad for that.”

45. From the underlined sentence in Paragraph 2 we know____.

A. every first lady has appeared on the cover of Vogue

B. only Bess Truman has appeared on the cover of Vogue

C. only two first ladies have appeared on the cover of Vogue

D. only Mrs. Obama has appeared on the cover of Vogue

46. From the forth paragraph we know Mrs. Obama ____.

A. loves their daughters very much

B. likes to do housework very much

C. likes to do all for her husband

D. has nothing to do after daughters go to school

47. From the last paragraph we know Mrs. Obama ____.

A. is a woman of kindness

B. has her own sense of beauty and idea

C. herself is a clothes designer and model

D. doesn’t like to be watched changing clothes

48. Which of the following is the best title?

A. First ladies of Vogue Cover Model

B. First Lady Michelle Obama Read Vogue Too

C. First Ladies Like to be Vogue Cover Model

D. First Lady Michelle Obama Is Vogue Cover Model