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【多选题】
对基因工程诞生起了决定性作用的理论上三大发现( )A.
证明了生物遗传物质是 DNA 而不是蛋白质
B.
明确了 DNA 的双螺旋结构和半保留复制机制
C.
破译了遗传密码
D.
细胞学说建立
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举一反三
【简答题】The smell of these flowers _______ sweet memories of her to him.
【单选题】The smell of these flowers _______ the memory of my childhood.
A.
calls for
B.
calls in
C.
calls off
D.
calls up
【单选题】These flowers grow ______ and smell ______.
A.
good; nice
B.
nice; well
C.
well; nice
D.
well; well
【简答题】These flowers smell fragrant.
【简答题】(Letter 3) How long had Frank and Polly not seen each other?
【简答题】Write down the verbs in the following sentences: 1 He cried broken-heartly. 2 Liverpool won the . 3 These flowers are/ smell fragrant. 4 They drive me crazy. 5 Please pass me the dictionary
【简答题】How long had Frank and Polly not seen each other? (Letter 3)
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