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【单选题】
下列叙述正确的是A.
在含淀粉酶的淀粉溶液中加碘试剂后溶液一直呈蓝色
B.
葡萄糖的哈沃斯式结构中没有醛基，所以葡萄糖不能发生反应
C.
麦芽糖的水解产物是葡萄糖，而乳糖和蔗糖水解则不能生成葡萄糖
D.
葡萄糖的分子式为C6H12O6，是果糖的异构体
E.
麦芽糖、乳糖和蔗糖水解都能生成葡萄糖，所以其性质也相同
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举一反三
【单选题】Foreign teachers would like students to ________ ask questions, submit theories, or to debate any required reading materials. [ ]
A.
hopefully
B.
gradually
C.
truly
D.
eagerly
【单选题】听力原文：M: We're having a debate on advertising Thursday evening and I have to take part. W: That's interesting. I should like to hear what people think about advertising. M: [19] What's there to say? We...
A.
Neutral.
B.
Cautious.
C.
Favorable.
D.
Negative.
【简答题】因为行政行为具有效力先定性，所以行政行为一经作出，就是合法有效的。 （ ）
【单选题】听力原文：W: We’re having a debate on advertising tomorrow and I have to take part. M: That’s interesting. I should like to hear what young people think about advertising. W: Well, we wouldn’t know what th...
A.
To take part in a debate.
B.
To make an advertisement.
C.
To sell a new product.
D.
To have a picnic.
【简答题】工商行政管理机关行政行为的具体效力中，（ ）是指行政行为一旦有效成立和生效，非依法规定而不得随意变动其内容。
【简答题】电火花加工的局限性,在于主要只能加工( )
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