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【简答题】
某同学在“常见的碱的通性”后做了一个家庭小实验：①用镊子夹取片状石灰石（长12mm、宽8mm、厚2～2mm）在酒精灯上加热到发红发亮时，石灰石由灰黑色变成灰白色．②趁热将灰白色固体投入5mL水的小玻璃杯中，灰白色固体在水中碎裂逐渐形成白色灰浆．过滤，将滤液分装在两只无色小玻璃瓶中．③向第一只小玻璃瓶中吹入二氧化碳，观察发生现象．向第二只小玻璃瓶中注入饱和碳酸钠溶液，观察发生的现象．回答下列问题： （1）请你用化学方程式表示以上实验中发生的所有化学反应：______． （2）在实验③中，能否用碳酸钠的稀溶液代替饱和碳酸钠溶液？为什么？______．
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【单选题】铸件上所有垂直于分型面的立壁均应有斜度。当立壁的表面为加工表面时，该斜度称为( )。
A.
起模斜度
B.
结构斜度
C.
结构斜度或 起模斜度
D.
结构斜度和 起模斜度
【简答题】One morning Mr. Green is driving around the county and 1 a small bookshop. When he sees an old man 2 the side of the road, he stops his car and says to the old man, ' Excuse me, I want 3 to the Sun ...
【单选题】听力原文：W: I'm sorry, but I'm afraid that you can't go in now. Mr. Green is in a conference right now. M: OK. I'll just wait for him here. Q: Why can't the man see Mr. Green? (3)
A.
Mr. Green is in a meeting.
B.
Mr. Green is out of the building.
C.
Mr. Green has too much work.
D.
Mr. Green doesn't work there anymore.
【单选题】听力原文：M: Who's that man? W: I think he's Mr. Green, our English teacher. M: No, he is Mr. Wang, our Chinese teacher. Q: Who is that man? (17)
A.
He is Mr. Jiang.
B.
He is Mr. Wang.
C.
He is an English teacher.
【简答题】西方传统语法学把语法分为 和 两部分。
【简答题】根据以下材料,填写电话留言 . Jessica answered a phone from Mr: Green at 10: 00 a m. on May 5 th . A:Good morning. New Star IT Company. What can I do for you? B:Good morning. This is Mr. Green from England. I'd lik...
【单选题】听力原文：W: Hello, Mr. Green. This is Ellen Wilson. May I speak to my husband? M: David is in the lab now, Ellen, and then he's going to eat lunch. I'll tell him to call you at home. Where is the woman's ...
A.
In the office.
B.
In the dining hall.
C.
In the lab.
D.
At home.
【简答题】语法学分词法和 两个部分
【单选题】听力原文：My friend's name is Li Lei. (15)
A.
My friend is Mr. Green.
B.
Li Lei is my friend.
C.
Mr. Green is my friend.
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