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【单选题】
原核生物基因表达调控的乳糖操纵子系统属于A.
复制水平调节
B.
转录水平调节
C.
反转录水平调节
D.
翻译水平调节
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【简答题】I sat at the front part of the car, next _____ the driver. 2. He spoke _____ a soft, but sure and utakable voice. 3. I was also excited to be invited _____ a small family party, the wedding of Jac...
【简答题】At last he was able to struggle free, run to his car and call out______ help.
【简答题】Mr Black was young and able. He worked very hard. And the boss liked him. Last month he was sent to China on business. When he got to Beijing, he visited some places of interest and felt very happy. O...
【单选题】At last he finish the work ahead of time.
A.
could
B.
was able to
C.
could have done
D.
would have been able to
【简答题】A. suddenly B business C. left D. same E. glad F. sad G. local Mr. Black was young and able. The boss liked him. Last month he was sent to China on 46 . Before he went back from China, he decided to b...
【单选题】下列操作中,(41)不可以将文档1.doc与2.doc的内容合并形成3.doc。
A.
先打开文档1.doc，另存为3.doc；再打开文档2.doc，另存为3.doc
B.
打开文档2.doc，将文档1.doc的内容复制到文档2.doc的首页，再另存为3.doc
C.
新建文档3.doc，再分别将文档1.doc和2.doc的内容复制在新建的文档中进行保存
D.
打开文档1.doc，将文档2.doc的内容复制到文档1.doc的尾部，再另存为3.doc
【简答题】The scientist failed many times, and at last he was able to ________ a new medicine (invention)
【判断题】At last he was able to struggle fre, run to his car and call out to help.
A.
正确
B.
错误
【单选题】●下列操作中， (41)可以将文档1．doc与2．doc的内容合并形成3．doc。 (41)
A.
先打开文档1．doc，另存为3．doc；再打开文档2．doc，另存为3．doc
B.
打开文档2．doc，将文档1．doc的内容复制到文档2．doc的首页，再另存为3．doc
C.
新建文档3．doc，再分别将文档1．doc和2．doc的内容复制在新建的文档中进行保存
D.
打开文档1．doc，将文档2．doc的内容复制到文档1．doc的尾部，再另存为3．doc
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【简答题】The scientist failed many times, and at last he was able to ________ a new medicine (invention)
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