摘要：8分.35题8分.共30分)32．科研人员利用红外测量仪可以灵敏地测量一 个密闭的小室中的CO2浓度.现进行如下实验: 在密闭但可透光的两相同小室中分别放置叶面积 都是10cm2的A.B两种植物的叶片.小室的容积 均为1升.在充足的光照条件下测量CO2的浓度.测量结果记录于下表:(CO2的浓度单位:毫克／升) 记录时间(分) 0 5 10 15 20 25 30 35 40 45 A种植物叶片 150 113 83 58 50 48 48 48 48 48 B种植物叶片 150 110 75 50 35 18 8 8 8 8 根据表中记录到的数据回答下列问题: (1)从表中可以看出密闭小室中的CO2浓度变化趋势是逐渐降低.原因是 ▲. (2)从记录的结果看.当CO2浓度降低到一定水平后不再降低了.维持在这个水平上.其原因是 ▲ . (3)如果将大小.长势相似的A种植物和B种植物培养在同一个密闭的钟罩内进行实验.其他条件相同.一段时间后.生长较良好的是 ▲ 种植物. (4)假定植物光合作用的最初产物是葡萄糖.经测定:在光照下密闭容器内CO2的质量每减少44克.植物体内葡萄糖净增加30克.则实验中的B种植物叶片在25分内净增加的葡萄糖的质量为 ▲ 毫克.
网址：http://m.1010jiajiao.com/timu3_id_30889[举报]
（本小题共6分，其中⑴题2分，⑵题4分）
某化学兴趣小组为了测定某种生铁样品中铁的质量分数，在实验室将5.8g生铁样品放入烧杯中，加入50g稀硫酸恰好完全反应（杂质不参加反应），反应后称得剩余物质的总质量为55.6g。请回答：
⑴你分析后一定能计算出产生氢气的质量为 。你上述计算的理论依据是 。
⑵请你参与这个小组，来计算出该生铁样品中铁的质量分数是多少？（结果保留一位小数）
（本小题共6分，其中⑴题2分，⑵题4分）
某化学兴趣小组为了测定某种生铁样品中铁的质量分数，在实验室将5.8g生铁样品放入烧杯中，加入50g稀硫酸恰好完全反应（杂质不参加反应），反应后称得剩余物质的总质量为55.6g。请回答：
⑴你分析后一定能计算出产生氢气的质量为 。你上述计算的理论依据是 。
⑵请你参与这个小组，来计算出该生铁样品中铁的质量分数是多少？（结果保留一位小数）
某化学兴趣小组为了测定某种生铁样品中铁的质量分数，在实验室将5.8g生铁样品放入烧杯中，加入50g稀硫酸恰好完全反应（杂质不参加反应），反应后称得剩余物质的总质量为55.6g。请回答：
⑴你分析后一定能计算出产生氢气的质量为 。你上述计算的理论依据是 。
⑵请你参与这个小组，来计算出该生铁样品中铁的质量分数是多少？（结果保留一位小数）
（本小题共6分，其中⑴题2分，⑵题4分）
某化学兴趣小组为了测定某种生铁样品中铁的质量分数，在实验室将5.8g生铁样品放入烧杯中，加入50g稀硫酸恰好完全反应（杂质不参加反应），反应后称得剩余物质的总质量为55.6g 。请回答：
⑴你分析后一定能计算出产生氢气的质量为 。你上述计算的理论依据是 。
⑵请你参与这个小组，来计算出该生铁样品中铁的质量分数是多少？（结果保留一位小数）
查看习题详情和答案>>
文学名著阅读（10分，每题5分）
【小题1】下列各项中对作品故事情节的叙述不正确的两项是（ ）
E．在“试文字宝玉始提亲”章节里，有人给宝玉说亲，女方是才貌双全，家境殷实，只是要女婿入赘，说亲未果。而后邢夫人向贾母建议说：“何用别处去找，一个宝玉，一个金锁的天配姻缘，老太太怎么忘了？”此建议得到贾母等人的赞同。
【小题2】《红楼梦》第一回是开篇。先后分别用“ ”、“ ”两个神话故事作楔子，为塑造贾宝玉的性格以及描写贾宝玉和林黛玉的爱情故事作铺垫，为小说染上了一层浪漫主义的色彩。（每空1分，共2分）
【小题3】请简述林黛玉第二次葬花的主要情节。（3分）
【小题4】请简述宝玉挨打的三个原因。（3分） 查看习题详情和答案>>
【小题1】下列各项中对作品故事情节的叙述不正确的两项是（ ）
| A．黛玉进荣国府，除外祖母外，还见了二舅母王夫人，大舅母邢夫人，贾珠的妻子李纨，“凤辣子”王熙凤以及迎春、探春、惜春和衔玉而生的贾宝玉。 |
| B．初春时节，黛玉做了一首诗《桃花行》，大家称赏不已，议定改“海棠社”为“桃花社”，林黛玉为社主，三月初五日齐集潇湘馆。 |
| C．宝玉戴着斗笠披着蓑衣来看黛玉。黛玉笑他像个渔翁。宝玉说要弄一套给她，黛玉笑着说自己穿上就成了渔婆。言毕，她顿觉失言，羞得脸飞红，便伏在桌上嗽个不住。 |
| D．抄检大观园，查到探春，探春命丫鬟们秉烛开门而待。但探春只允许搜查她自己的东西，丫鬟的东西不能碰。查到惜春处，竟在入画箱中搜出一些银锞子和男人的靴袜等物。惜春胆小，见了这些虽害怕，但仍袒护入画，还宣称自己早知道此事。 |
【小题2】《红楼梦》第一回是开篇。先后分别用“ ”、“ ”两个神话故事作楔子，为塑造贾宝玉的性格以及描写贾宝玉和林黛玉的爱情故事作铺垫，为小说染上了一层浪漫主义的色彩。（每空1分，共2分）
【小题3】请简述林黛玉第二次葬花的主要情节。（3分）
【小题4】请简述宝玉挨打的三个原因。（3分） 查看习题详情和答案>>
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.
查看习题详情和答案>>
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.
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