已知某DNA分子中，G与C之和占全部碱基总数的35.8%，其中一条链上的T与C分别该链碱基总数的32.9%和17.1%，则在它的互补链中，T和C分别占该链碱基总数的 [ ]

A．32.9% 和17.1%

B．31.3% 和18.7%

C．18.7% 和31.3%

D．17.1% 和32.9%

句型转换。

1. Sam is thirsty. (一般疑问句)

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2. Alice is hungry. (否定句) 

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3. I like vegetables. (否定句)

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4. We eat porridge for breakfast. (一般疑问句) 

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5. Frank is 1.7 metres tall. (针对划线部分提问)

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6. Lynn's eyes are blue. (针对划线部分提问) 

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7. I feel tired. (针对划线部分提问) 

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8. I have nine apples. (针对划线部分提问) 

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9. I do my homework in the afternoon? (一般疑问句) 

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10. I'd like some soup. (一般疑问句) 

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