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【单选题】
有关酶活性中心的描述除哪项外，都是错误的A.
酶的活性中心是指能与底物特异性结合并把底物转换为产物的空间结构区域
B.
酶的活性中心是由一级结构上相互临近的基团组成的
C.
酶的活性中心在与底物结合时不应发生改变
D.
没有或不能形成活性中心的蛋白质不是酶
E.
酶的活性中心外的必需基团也参与对底物的催化作用
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举一反三
【多选题】Part III Cloze (1.5*10=15 points) Section A In this section, you will read a story about Kerry. Please fill in the blanks with the given words. 在本节中,阅读 Kerry 的故事,在空白填入合适的选项。
A.
went
B.
did
C.
found
D.
took
E.
started Last August, our class 41 something very exciting on our school trip. We 42 to Mount Hua. We 43 our trip at 8:00 in the morning. Everyone in our class 44 a bag with some food and water. After three hours, someone looked at the map and 45 _out we were not anywhere near the top.
【简答题】根据下列句子所给的中英文提示，写出各单词的正确形式。 1. —I don't think Liu hua is _____ (英俊). —I really don't agree with you. 2. My daughter has a _____ (圆的) face like an apple. 3. My friend often shares his _____ (欢乐) with me...
【简答题】城市植被分类体系中的 群落是长期适应城市气候、土壤等因素的结果，具有抗逆性强、适应性强等特点，增加了当地生态系统的物种多样性。
【简答题】【动词填空 用括号内所给动词的适当形式填空，并将答案写在答题卡标有题号的横线上。（本大题共8分，每小题1分） 小题1】—Did the book give the information you need? —Yes. But ______ (find) it, I had to read the whole book. 小题1: “You needn’t describe Jimmy any m...
【简答题】情景交际：补全对话，每空一词。 A: Good morning. Are you Tom? The new exchange student __1__ the US? B: Yes, I am. A: __2__ to our school. May I ask you __3__ questions? B: Sure. A: Have you ever __4__ to China befor...
【简答题】根据句意，用所给单词的适当形式填空。每空一词。（10分） 1. Please get up ______ (quick), or you’ll be late for school. 2. We did not enjoy it at the ______ (begin). 3. ______ (luck), he didn’t hurt badly. 4. Thanks for ______ (...
【单选题】Which of the following functions does the "ifconfig en0" perform？（）
A.
Shuts down en0
B.
Displays en0 settings
C.
Reconfigures en0 using the ODM
D.
Sends an SNMP alert to the network administrator
【单选题】8,Our school did not ___ for Christmas until mid-December.
A.
break out
B.
break down
C.
break in
D.
break up
【简答题】用括号里单词的适当形式填空。 1. He is (real) a good teacher in our school. 2. He made faces (make) us laugh. 3. He was the one who did the (little) of the work and got the most of the money. 4. - you (be) to the ho...
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