【題目】聽下面一段對話,完成五道小題,每小題僅填寫一個詞。這段對話你將聽兩遍。
【答案】
(1) 150
(2) a big promotion
(3) a great time
(4) afford
(5) too much time
【解析】聽力原文:
M: Hey Betsy, did you hear the great news?
W: No, Frank, I haven't. What is going on?
M: I just got a promotion, and I am going to throw a huge party for all of my friends. I would love it if you would come.
W: Wow, thanks so much, when is the party?
M: I am thinking of having it on Saturday. I am hoping there will be 150 people there. This really is a big promotion for me and my family.
W: Wow, 150 people. That is a lot. This must be a big promotion. I would love to go. I think it would be a great time.
M: Oh great, the more the merrier. This really a big deal for me. We can now afford the new house my wife has always wanted. I just hope I don't have to put too many hours in. I would hate to lose too much time with my family.
W: I can understand that, but let's keep focusing on the bright side. I can't wait for that party.
科目:高中地理 來源: 題型:
【題目】實驗室欲測定某NaOH溶液的物質的量濃度,用0.100 mol·L-1 HCl標準溶液進行中和滴定(用甲基橙作指示劑)。請回答下列問題:
(1)滴定時,盛裝待測NaOH溶液的儀器名稱為 ,盛裝標準鹽酸的儀器名稱為 ;滴定至終點的顏色變化為 。
(2)甲同學在實驗過程中,記錄滴定前滴定管內液面讀數0.50 mL,滴定后液面如圖所示,則此時消耗標準溶液的體積為 。
(3)乙同學做了三組平行實驗,數據記錄如下:
實驗序號 | 待測NaOH溶液的體積/mL | 0.100 mol·L-1 HCl溶液的體積/mL | |
滴定前刻度 | 滴定后刻度 | ||
1 | 25.00 | 0.00 | 26.29 |
2 | 25.00 | 1.56 | 31.30 |
3 | 25.00 | 1.00 | 27.31 |
讀取上述合理數據,計算出待測NaOH溶液的物質的量濃度為 (保留三位有效數字)。
(4)下列操作會使測定結果偏高的是 (填字母)。
A.錐形瓶用蒸餾水洗凈后再用待測液潤洗
B.酸式滴定管用蒸餾水洗凈后再用標準液潤洗
C.滴定前酸式滴定管尖端氣泡未排除,滴定后氣泡消失
D.滴定前酸式滴定管讀數正確,滴定后俯視滴定管讀數
查看答案和解析>>
科目:高中地理 來源: 題型:
【題目】把18.0 mol·L1的濃硫酸稀釋成1.80 mol·L1的稀硫酸100 mL,實驗操作如下:
(1)請在下列操作步驟中填寫有關的空格:
①用量筒量取 mL的18.0 mol·L1的濃硫酸;
②將 沿燒杯內壁慢慢注入盛有少量 的燒杯中;
③將已冷卻至室溫的H2SO4溶液沿玻璃棒注入 mL的容量瓶中;
④用少量蒸餾水洗滌燒杯2~3次,并將洗滌液也全部轉移到容量瓶中;
⑤繼續(xù)向容量瓶中加蒸餾水,直至液面接近刻度線 mL處;
⑥改用 逐滴加蒸餾水,使溶液凹液面的最低處恰好與刻度線相平;
⑦蓋好容量瓶塞,反復顛倒,搖勻;
⑧將配好的稀硫酸倒入試劑瓶中,貼好標簽。
(2)由于操作不當,會引起實驗誤差。下列情況對所配制的H2SO4溶液的物質的量濃度有何影響?(用“偏大”“偏小”“無影響”填寫)
①容量瓶用蒸餾水洗滌后殘留有少量的水 。
②搖勻后,發(fā)現溶液的液面低于刻度線,又加水至刻度線 。
(3)容量瓶上標有 (選填下列編號)。
①溫度 ②濃度 ③容量 ④壓強 ⑤刻度線
查看答案和解析>>
科目:高中地理 來源: 題型:
【題目】用過量的H2SO4、NaOH、NH3·H2O、NaCl等溶液,按下圖所示步驟分開五種離子,則溶液①②③④分別是
A.①NaCl、②NaOH、③NH3·H2O、④H2SO4
B.①H2SO4、②NaOH、③NH3·H2O、④NaCl
C.①H2SO4、②NH3·H2O、③NaOH、④NaCl
D.①NaCl、②NH3·H2O、③NaOH、④H2SO4
查看答案和解析>>
科目:高中地理 來源: 題型:
【題目】已知有如圖所示物質的相互轉化:
試填寫下列空白:
(1)寫出B的化學式________,D的化學式________。
(2)寫出由E轉變成F的化學方程式_______________________________。
(3)寫出下列反應的離子方程式:
D溶液與AgNO3溶液反應:________________________________________;
向G溶液中加入A:_____________________________________________。
(4)A與稀鹽酸反應生成0.1 mol氣體,轉移電子數為________。
查看答案和解析>>
科目:高中地理 來源: 題型:
【題目】為了制取純凈干燥的氣體A,可用如圖所示裝置,生成A的速度可通過滴入液體B的速度控制,已知A是一種無色、無味、不能使酸堿指示劑變色、也不會在空氣中燃燒的氣體,但能使帶火星的木條復燃。
(1)A是________。
(2)若C是一種淡黃色固體,則燒瓶中發(fā)生反應的化學方程式是___________。
(3)若C是一種黑色粉末,則B物質是________,C物質的作用是___________。
(4)洗氣瓶(廣口瓶)中裝的試劑D是________,其作用是____________。所制得的氣體用________法收集。
查看答案和解析>>
科目:高中地理 來源: 題型:
【題目】【2015·陜西】A
Share with us
Would you like to have your writing published in this magazine?Then let us know! We pay for stories, anecdotes and jokes:Anecdotes and Jokes$50,What’s made you laugh recently? A funny sign? A colleague’s be haviour? Got a joke? Send it in for Laughter is the Best Medicine!
Email: Juliet@sws.com Smart Animals Up to $100 Send us a tale about the strange behaviour of unique pets or wildlife in up 300 words.
Email: audry@sws.com Power of Love Up to $150 Acts of generosity can change lives or just give you that warm feeling full of love. Share your moments 100—500 words.
Email: susan@sws.com My Story $350 Do you have an inspiring or life-changing story to tell? Your story must be true, unpublished, original and 800-1000words.
Email: nanjc@sws.com For more information, please visit: http://www.sws.com./share.
【1】How much will the magazine pay for a joke to be published?
A. $50 B. $100
C. $150 D. $350
【2】If you want to share a story of your pets with the readers, you need to submit it to_______.
A. Anecdotes and Jokes B. Smart Animals
C. Power of Love D. My Story
【3】A story showing people’s generosity should be emailed to the editor at_______.
A. juliet@sws.com B. susan@sws.com
C. Audrey@sws.com D. nanjc@sws.com
【4】An inspiring story sent to the magazine should_______.
A. describe strange behaviour
B. contain less than 800 words
C. be real and original
D. be published before
查看答案和解析>>
科目:高中地理 來源: 題型:
【題目】When you use up all the electricity in the battery, the phone stops working you recharge it.
A. if B. since C. although D. until
查看答案和解析>>
科目:高中地理 來源: 題型:
【題目】室溫下,單質A、B、C分別為固體、黃綠色氣體、無色氣體,在合適反應條件下,它們可按下面框圖進行反應。又知E溶液是無色的。
請回答:
(1)A是________,B是________,C是________(填化學式)。
(2)反應①的化學方程式為____________________________。
(3)反應③的化學方程式為____________________________。
(4)反應④的化學方程式為______________________。
查看答案和解析>>
湖北省互聯網違法和不良信息舉報平臺 | 網上有害信息舉報專區(qū) | 電信詐騙舉報專區(qū) | 涉歷史虛無主義有害信息舉報專區(qū) | 涉企侵權舉報專區(qū)
違法和不良信息舉報電話:027-86699610 舉報郵箱:58377363@163.com