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【单选题】
下列关于基因武器的说法,错误的是 ()A.
具有的抵抗力、致病性和耐药性等特点
B.
会使原有的检测、消毒防治等方法失效
C.
比一般的生物武器具有更大规模的杀伤力
D.
生物武器的实质是各种基因武器
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【简答题】补全对话。 A: Hello! Emma, have you ever been to Qingdao? B: Yes, I have. A: How many times have you been there? B: 1 ? A: Only once? When did you go there? B: Two years ago. A: 2 ? B:Great! It is a very b...
【单选题】听力原文：Woman: I haven't seen you for ages! Where have you been? Man: Actually, I have been doing research recently. I have to stay in the lab almost all the time. I'm happy to tell you that the work is ...
A.
He is doing research.
B.
He works long hours in the lab.
C.
He is making progress.
D.
He was unhappy until recently.
【简答题】用所给动词的适当形式填空。 1. Hello, I _____ (not know) you _____(be) in London. How long have you been there? 2. By the end of last week, he _____(read) this book four times. 3. I _____ (not have) any English kno...
【简答题】What will people die of 100 years from now? If you think that is a question, you have not been paying attention to the revolution that is taking place in bio-technology(生物技术). With the help of ...
【简答题】What will people die of 100 years from now? If you think that is a question, you have not been paying attention to the revolution that is taking place in biotechnology. With the help of new me...
【单选题】It’s nice to see you again. What _____ since we last met?
A.
have you done
B.
had you done
C.
have you been doing
D.
did you do
【简答题】肺部常见的异常影像改变主要包括 _________ 、_________ 、_________ 、_________ 、_________ 等。
【单选题】My dear, where have you ___? I___ you everywhere. [ ]
A.
gone, have been hunting for
B.
been, have been hunted for
C.
been, have been hunting for
D.
gone, have been looking for
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