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【简答题】
Complete the conversation with the sentences in the box. Listen and check the answer. Then practice the conversation with a partner. A: You’re really into it, aren’t you? B: Are you serious? I’m crazy about it! C: And I just love this screen. D: Wow, it sure looks great. E: Isn’t it wonderful? 同学们填答案时候,只要写ABCDE, 不用写句子!!!!!!! Alice: What are you unboxing, David? David: It’s my new smartphone._____________________ Alice: ___________________________ David: It works great, too. It has a high-quality camera, and it’s a videophone. The keyboard is easy to use and even a child can use it. Alice: Yeah, but a child couldn’t afford the high price, right? David: True enough, but this one is cheaper than most other models._________The colours are so real! And you can download tons of things onto it. Alice:________________________ David:______________________________
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皮皮学刷刷变学霸
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【单选题】2 mol H 2 ( g ) 与 1 mol O 2 ( g ) 反应生成 2 mol H 2 O ( g ), 则反应进度 ( D )
A.
0.5 mol
B.
1 mol
C.
2 mol
D.
无法判断
【简答题】天线增益是指天线将往()某一指定方向集中辐射的能力。一般把天线的()方向上的场强与参考天线的场强相比，将功率密度增强的倍数定义为增益。
【单选题】2 mol H2(g)与1 mol O2(g)反应生成2 mol H2O(g),则反应的进度为( )。
A.
2 mol
B.
1 mol
C.
0.5 mol
D.
无法确定