设{an}为公比q>1的等比数列，若a2009和a2010是方程4x2-8x+3

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问题选择题

设{a_n}为公比q>1的等比数列，若a₂₀₀₉和a₂₀₁₀是方程4x²-8x+3=0的两根，则a₂₀₁₁+a₂₀₁₂=[ ]

A.18

B.10

C.25　　　

D.9

答案

答案：A

填空题

看图完成句子。

(1) (2) (3) (4) (5)

1. I______ ______ at 6: 30 in the morning.

2. When do you ______ ______ ______?

3. I usually ______ ______ at school.

4. Mark does his homework ______ ______ ______ ______.

5. My sister often ______ ______ ______ at ten o'clock.

单项选择题

1分子丙酮酸彻底氧化产生（）

A．12.5分子ATP

B．12分子ATP

C．10.5分子ATP

D．10分子ATP

E．2分子ATP