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【多选题】
基因突变的机制中,属于复制错误的是A.
碱基的互变异构——配对方式改变
B.
DNA环出或跳格
C.
脱嘌呤
D.
脱氨基
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举一反三
【单选题】I ____ round and found all of them ____ to the teacher carefully. A.Look ;listen B. looked; listening C.look;listening D. looked; listened
A.
Look ;listen
B.
looked; listening
C.
look;listening
D.
looked; listened
【简答题】阅读理解 Once an old man went to see a doctor. The doctor looked him over carefully and said, 'Medicine won't help you. You must have a good rest. Go to bed early, drink milk, walk a lot and smoke one cig...
【简答题】写出下面句子的谓语部分。 1. I registered at a hotel near the train station. ( ) 2. He lives on a small salary.( ) 3. I looked up the word in the dictionary.( ) 4. Please fill the form out carefully.( ) 5. Ne...
【单选题】Once an old man went to see a doctor. The doctor looked him over carefully and said, 'Medicine won't help you. You must have a good rest. Go to bed early, drink milk, walk a lot and smoke one cigar a ...
A.
one
B.
two
C.
three
【简答题】阅读理解。 One day a man went to see a doctor. After the doctor looked him over carefully , he said to the man, 'Well , there is nothing much wrong with you , but I'm afraid you have a problem .You worry t...
【简答题】阅读理解。 Mr. Ross finished speaking on the phone, and then looked carefully at my mother and me. For a few seconds he didn't speak, and just watched us. Then he said, 'I'm pleased to meet you, Mrs. Sande...
【单选题】I looked carefully at the text and realized that it was____ women who lived in the countryside .
A.
intended for
B.
appealed for
C.
taken for
D.
built up for
【单选题】I looked at the pretty girl carefully, _____ who she could be. [ ]
A.
wondering
B.
to wonder
C.
wondered
D.
having wondered
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