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【单选题】
实验室制备少量氮气制备的方法是（）A.
将硝酸铵 加热
B.
将亚硝酸铵 加热
C.
将氯气与氨气混合
D.
将空气液化、分馏
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举一反三
【单选题】Your lette has been passed on to us for ____________________.
A.
attendance
B.
care
C.
attention
D.
in receipt
【简答题】根据上下文，在下面横线处填上适当的词，完成对话。 1. A: Hello! I need a stamp, please. B: (1) are you (2) your letter? A: I'm sending it to Shijiazhuang. (3) (4) is the stamp, please? B: One yuan. A: (5) . 2. A: (6) I see tha...
【单选题】What is suggested if you want to keep your friends?
A.
Write letters carefully.
B.
Write letters promptly.
C.
Write letters with a lot of information.
D.
Write letters with a proper style.
【简答题】反映计划生育工作水平的主要指标有哪些？
【简答题】Answer the questions. (根据短文内容回答下列问题。) Mar. 25, 2009 Dear Helen, Thanks for your last letter. Yes, I'm enjoying myself on my exchange program in France. It's even better than I thought it would be. I w...
【单选题】Directions: This part is to test your listening ability. It consists of 3 sections . Section A Directions: This section is to test your ability to understand short dialogues. There are 5 recorded dial...
A.
He does not have a phone.
B.
He will make the call for her.
C.
The woman can use his phone.
D.
The phone is out of order.
【简答题】·You are in charge of technical resources in your company．You have just received a letter from the Customer Services Manager at JLM Communications，who are installing a new telephone switch board at yo...
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