根据句意和提示完成句子。

1.—How long have you studied English?

   —For ______ (将近) six years.

2. It's easier to learn a foreign ______(语言) when you visit the country.

3. I've lived in Beijing______ (自从) 2001.

4. They are very______ (与……不同) from our school.

5. That______ (听起来) very surprising.

6.—Do you like______ (宠物)?

   —Yes, very much.I've had a lovely dog for 5 years.

7. You're very ______ (幸运) to have a chance to go abroad.

8.—I don't feel very well today.

  —Well, are you______ (生病)?

(2011年福建南平调研)某同学将一直流电源的总功率P_E、输出功率P_R和电源内部的发热功率P_r随电流I变化的图线画在了同一坐标系中，如图中的a、b、c所示．则判断错误的是(　　)

A．直线a表示电源的总功率

B．曲线c表示电源的输出功率

C．电源的电动势E＝3 V，内电阻r＝1 Ω

D．电源的最大输出功率P_m＝9 W