本部分38小题.每小题l.5分.共57分.每小题只有一个选项符合题意3.配制10%的CuS04溶液和粗盐提纯都要用到的仪器是 A 托盘天平 B 烧杯 C 酒精灯 D 铁架台 查看更多

 

题目列表(包括答案和解析)

完型填空(共20小题;每小题1分,满分20分)
阅读下面短文,掌握其大意,然后从四个选项(A、B、C和D)中,选出最佳选项。
"Hey, Tahlia! How's the model?"
I had just taken a bite of my hot dog __21__ I heard a familiar voice yelling at me from across the crowded school yard. I saw a group of popular girls who were all __22__.
"What kind of __23_ are you going to do? An ad for a Frankenstein movie?" More laughter. My stomach twisted into a tight knot. How could they humiliate (羞辱) me like this, __24__ the entire school? As I walked into the cafeteria, I __25__ the dark scars on my right hand.
At 9 months old, I knocked over a tea pot and dumped boiling water allover my hands and stomach. My parents __26__ me to the hospital, but I had to have skin graft (移植) operation. I was in so much pain! But what __27__ me most were the cruel things people said about how I looked, __28__ that day at lunch.
The girls were being supermean to me because they'd heard I was considering doing some modeling. A close friend had suggested that I shouldn't let my scars limit me and that I might __29__ a good model.
But after that __30__ at school, I was sure I'd made a huge mistake. Upon arriving home, I covered the mirror with a blanket, fell on my bed and sobbed.
The next day, I __31__ myself to go to school. At lunch my best friend Jesse tried to encourage me: "You can't __32_ forever, Tahlia. So what if you have a few scars? Just go outside and show them that you're just as good as they are." Although I knew he was right, I couldn’t __33__ standing up for myself like that.
However, that night as I sat on the bed, my friend's words replayed in my mind. I'm __34__ hiding from myself, I thought. How stupid! Slowly, I stood up, walked over to the __35__, and tossed the blanket aside. There, in the mirror I saw a slim, dark-haired, blue-eyed girl, looking just fine, __36__ with a few scars.
The next day I wore a comfortable T-shirt to school. What's more, I had lunch outside the cafeteria, __37__ beside those mean girls. They were shocked that I should dare to walk into their territory. I felt __38_ too—free and happy.
Sometimes people still look at me strangely. They __39_ and stare, but I don't let it get to me. I have applied to several modeling companies, and at least one company is considering me for jobs. Maybe I'll never __40_ posing on the runway, but I do know one thing: I'm done.
【小题1】
A.as B.when C.while D.before
【小题2】
A.applauding B.cheering C.laughing D.quarreling
【小题3】
A.modeling B.writing C.drilling D.acting
【小题4】
A.in spite of B.in view of C.in terms of D.in front of
【小题5】
A.looked into B.searched for C.wondered aboutD.glanced at
【小题6】
A.presented B.sent C.rushedD.handed
【小题7】
A.hurtB.beat C.disappointed D.puzzled
【小题8】
A.for B.like C.on D.after
【小题9】
A.impressB.make C.consult D.defeat
【小题10】
A.effect B.phenomenon C.challenge D.scene
【小题11】
A.forced B.expected C.reminded D.preferred
【小题12】
A.apologize B.beg C.hide D.complain
【小题13】
A.consider B.imagine C.appreciate D.resist
【小题14】
A.hardly B.ever C.even D.gradually
【小题15】
A.blanket B.bed C.chair D.mirror
【小题16】
A.while B.though C.but D.because
【小题17】
A.right B.still C.therefore D.anyhow
【小题18】
A.sensitive B.uncomfortable C.different D.tense
【小题19】
A.compare B.associate C.wave D.whisper
【小题20】
A.give up B.end up C.put up D.set up

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选择填充题(本大题包括5小题,每小题2分,共10分。先在A、B、C中选择一个正确选项填在相应的括号里,然后在D处再补充一个符合题意的答案。每小题的选择与填充各1分)

在化学元素里,有4种元素约占人体的96%以上,被称为人体必需元素中的常量元素。下列元素肯定属于人体常量元素的是………………………………………………………………………………………………(     )

A、C                  B、Fe                 C、Zn               D、          

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酒精灯是实验室中常用的加热仪器,某小组同学对酒精灯火焰温度进行如下探究.
(I)定性研究:甲同学取一根火柴梗,拿住一端迅速平放入酒精灯火焰中,l~2s后取出,观察到位于外焰的部分明显碳化.
(1)写出碳完全燃烧的文字(或符号)表达式:
 

(2)由上述现象得出结论:外焰温度最高,你认为原因是
 

(Ⅱ)定量研究:乙和丙同学在老师指导下,分别利用高温传感器测得酒精灯各层火焰平均温度如下表.
(3)由下表得出结论:
 
(填“焰心”、“内焰”或“外焰”)温度最高.
火焰层 平均温度/℃
焰心 432 598
内焰 666 783
外焰 520 667
(4)结合定量研究结论,下列图示中加热方法(试管夹未画出)最合理的是
 
(填字母序号).
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(Ⅲ)交流反思:不仅酒精灯的各层火焰温度不同,而且相同火焰层温度也有差异.
(5)本小问为加分题,每答对一问加2分,试卷总分不超过60分
造成乙、丙两同学所测相同火焰层温度差异的原因可能是(写出两点即可)
 

 

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酒精灯是实验室中常用的加热仪器,某小组同学对酒精灯火焰温度进行如下探究.
(I)定性研究:甲同学取一根火柴梗,拿住一端迅速平放入酒精灯火焰中,l~2s后取出,观察到位于外焰的部分明显碳化.
(1)写出碳完全燃烧的文字(或符号)表达式:   
(2)由上述现象得出结论:外焰温度最高,你认为原因是   
(Ⅱ)定量研究:乙和丙同学在老师指导下,分别利用高温传感器测得酒精灯各层火焰平均温度如下表.
(3)由下表得出结论:    (填“焰心”、“内焰”或“外焰”)温度最高.
火焰层平均温度/℃
焰心432598
内焰666783
外焰520667
(4)结合定量研究结论,下列图示中加热方法(试管夹未画出)最合理的是    (填字母序号).

(Ⅲ)交流反思:不仅酒精灯的各层火焰温度不同,而且相同火焰层温度也有差异.
(5)本小问为加分题,每答对一问加2分,试卷总分不超过60分
造成乙、丙两同学所测相同火焰层温度差异的原因可能是(写出两点即可)
   
   

查看答案和解析>>

酒精灯是实验室中常用的加热仪器,某小组同学对酒精灯火焰温度进行如下探究.
(I)定性研究:甲同学取一根火柴梗,拿住一端迅速平放入酒精灯火焰中,l~2s后取出,观察到位于外焰的部分明显碳化.
(1)写出碳完全燃烧的文字(或符号)表达式:.
(2)由上述现象得出结论:外焰温度最高,你认为原因是.
(Ⅱ)定量研究:乙和丙同学在老师指导下,分别利用高温传感器测得酒精灯各层火焰平均温度如下表.
(3)由下表得出结论:(填“焰心”、“内焰”或“外焰”)温度最高.
火焰层平均温度/℃
焰心432598
内焰666783
外焰520667
(4)结合定量研究结论,下列图示中加热方法(试管夹未画出)最合理的是(填字母序号).

(Ⅲ)交流反思:不仅酒精灯的各层火焰温度不同,而且相同火焰层温度也有差异.
(5)本小问为加分题,每答对一问加2分,试卷总分不超过60分
造成乙、丙两同学所测相同火焰层温度差异的原因可能是(写出两点即可)
①;
②.

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