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【简答题】
Directions: please fill in the missing word in each blank. (5 points, 1 point each) 1. F: Wow, look at this one. The colors are incredible. M: Are you kidding? It’s 1 . It looks like a lot of messy lines on the canvas to me. F: Yeah, but that was his style. You know, he was known for his abstract paintings. They were very 2 at the time. M: Yeah, I know. I’ve heard of him, but I’m not sure I’d call this great art. F: Well, believe it or not, his paintings sell for millions of dollars. 2. F: Check out this display. M: Whoa, this is interesting; I feel like I’m in a forest, except that instead of trees, I’m 3 by all of these faces, each with a different expression. F: Yeah, I know. Each one of these sculptures really has its own 4 , huh? I’m going to take a photo. M: Okay. Hey, who’s the artist? F: Uhm, I don’t know. The 5 just say that this piece was first shown in an art gallery in Beijing a few years ago, so I’m assuming the artist is Chinese. I’d like to see more of this person’s work. M: Yeah, me too.
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【单选题】香豆素与稀碱长时间加热生成的产物是( )
A.
脱水化合物
B.
顺式邻羟基桂皮酸
C.
反式邻羟基桂皮酸
D.
脱羧基产物
E.
醌式结构
【单选题】根据所给正立面图和左例立面图,选择正确的平面图。 ( )
A.
B.
C.
D.
D
【判断题】悲剧的目的不在于摹仿人的品质,而在于摹仿某个行动。
A.
正确
B.
错误
【简答题】DNS是什么,它是如何工作的?
【单选题】The efficient scale of production is the quantity of output that minimizes
A.
average fixed cost.
B.
average total cost.
C.
average variable cost.
D.
marginal cost.
【单选题】— Would you like me to get you a ticket for Jay Chou's personal performance? — _____. [     ]
A.
Yes, but I can do it
B.
No, thank you. I have got one
C.
Sorry to hear that
D.
Help me right now
【单选题】The efficient scale of the firm is the quantity of output that
A.
maximizes marginal product.
B.
maximizes profit.
C.
minimizes average total cost.
D.
minimizes average variable cost.
【判断题】悲剧的目的不在于摹仿某个行动,而在于摹仿人的品质。
A.
正确
B.
错误
【简答题】溶液中同时含有 NH 3 和 NH 4 Cl, 且 c(NH 3 )=0.20mol/L , c(NH 4 Cl)=0.20mol/L ,计算该溶液的 pH 值=( ).
【单选题】某无色溶液中含有NH 4 + 、K + 、Al 3+ 、SO 4 2 ˉ四种离子,进行如下实验: (1)取10 mL该溶液于试管中并滴加Ba(NO 3 ) 2 溶液,加稀硝酸酸化后过滤得到0.03 mol白色沉淀; (2)取10 mL该溶液于试管中,滴加NaOH溶液产生白色沉淀,当沉淀增加到一定量后开始产生气体(必要时可加热),最后沉淀完全溶解。并且随NaOH溶液的加入,沉淀和气体的变化关系如下图...
A.
根据图所示数据计算实验中使用的NaOH溶液的物质的量浓度为1mol/L
B.
根据信息分析该溶液中焰色反应呈现紫色的离子的物质的量浓度为1mol/L
C.
另取一定量该溶液滴加一定量的Ba(OH) 2 溶液,能使Al 3+ 和SO 4 2 ˉ同时完全沉淀
D.
NH 4 + 、K + 、Al 3+ 、SO 4 2 ˉ四种离子的物质的量之比为:2:1:1:3
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