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【简答题】
请用“＞”、“＜”、“=”或“无法比较”填空． （1）pH______ 7的溶液能使紫色石蕊试液变红．石灰水的pH______7． （2）相对分子质量______ 29的气体可用向上排空气法收集． （3）5.6g含铜的铁粉与足量的稀硫酸反应，生成的氢气质量______0.2g． （4）一个NH 4 + 离子和一个CH 4 分子相比，所含质子数前者______后者，所含电子数前者______后者． （5）Xg Cu经过下列一系列变化Cu→CuO→CuSO 4 →Cu（OH） 2 →CuCl 2 →Cu （设各步反应中各物质均无损耗），最后生成的Cu的质量______Xg； （6）在室温时，某同学配制100g溶质质量分数为11.5%的KNO 3 溶液，计算后，他在天平左盘放入10g砝码，游码定位于1.5g处，他在右盘中放入KNO 3 晶体，称量完毕后，他将100mL量筒平放在桌上，视线与量筒内凹液面的最低处保持水平，量取了88.5mL水，用以配制溶液． 请问该同学这样配出的溶液的溶质质量分数______11.5%．
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反馈参考答案：
举一反三
【单选题】What should you do if you don’t get any reply after the job interview?
A.
Nothing.
B.
Wait for a little longer.
C.
Write a thank-you note and request feedback.
D.
Talk too much about the interview
【单选题】恩格斯在《路德维希.费尔巴哈和德国古典哲学的终结》一文中指出：“全部哲学，特别是近代哲学的重大的基本问题，是思维和存在的关系问题。”“哲学家依照他们如何回答这个问题而分成了两大阵营。”从根本上来说，这两大阵营划分的标准是
A.
是否承认世界的统一性
B.
对世界本原问题的不同回答
C.
是否承认世界的可知性
D.
对意识有无能动性的不同回答
【单选题】What should you do with mail that has been received for guests that have not yet arrived?
A.
Mark it “return to sender” and repost it
B.
Keep it at reception until the guest asks for it
C.
Place it in the letter rack under the room allocated
D.
Make a note in the system to alert the receptionist at check in
【简答题】What should you note in your education?
【单选题】What should you do with fake news?
A.
Report it to the police
B.
Make a note of it for reference
C.
Not show it to other people online
【单选题】恩格斯在1886年公开发表的《路德维希•费尔巴哈与德国古典哲学的终结》一文中指出：“一个伟大的基本思想，即认为世界不是既成事物的集合体，而是( )的集合体，其中各个似乎稳定的事物同它们在我们头脑中的思想映象即概念一样都处在生成和灭亡的不断变化中。”
A.
过程
B.
辩证
C.
发展
D.
客观
【多选题】When you want to talk to someone about an important matter and find out he is engaged in a phone conversation, what should you do?
A.
Stand nearby and wait quietly until he finishes the phone call.
B.
Go to do somethings else and come back later.
C.
Leave a note telling him you would like to talk to him about what.
D.
Whisper in his ear that you need to talk to him immediately.
【多选题】What should be included in a sick note?
A.
A brief description of your illness.
B.
Your doctor's diagnosis.
C.
What medicine you are taking.
D.
Details of who is looking after you.
E.
Your doctor's letter.
F.
How long you are going to stay at home for.
G.
What you are doing to help yourself get better.
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