3．将一根电阻丝接在某恒定电压的电源两端，电流做功的功率为p。若将该电阻丝均匀地拉长为原来的两倍后再接入该电源。则它的功率为 [ ]

A. 4p 　　　B．0．25p　　C．16p 　　D．0．125p

2．某电路在1分钟内消耗的电能为100J。若电路两端的电压变为原来的2倍，电路的电阻变为原来的二分之一。此电路在1分钟内消耗的电能是()

A．50J　　　　 　　　　　　　　　　　　　B．200J

C．400J　　　　　　　　　　　　　　　　　 D．800J

1．把“8V 16W”和“12V 36W”的两盏电灯、串联到电压是16V的电路中，比较两盏电灯的实际功率，则()

A．灯的实际功率大　　　　　　　　　　　　 B．灯的实际功率大

C．两盏电灯的实际功率一样大　　　　　　　　 D．不能确定哪盏电灯的实际功率大

7. --- After reading the story about Jin Jing, I was very _______.

　 --- ________. She’s really brave. (09烟台)

　 A. relaxed, So was I　　　　　　　 B. impressing, So did I

　 C. impressed, So was I　　　　　　 D. relaxing, So I did

答案：C

6. -My parents never stop going on about (唠叨) how I should study hard.

-________.(09德州)

A. So my parents do　　　　　　　　 　　　　 B. Nor my parents do

C. Nor do my parents　　　　　　　 　　　　 D. So do my parents

答案：C

5. --- How well Susan dances! I can’t believe my eyes.

　 --- ___________.(09益阳)

　 A. So she does　　　 B. So does she　　　 C. So did she

4. -I hear Yang Yan made an English speech at the graduation ceremony yesterday.

-_______, and _______.(09黄冈)

A. So she did; so did I　　　　　　　　　　　　　　　 B. So did she; so I did　　　　　

C. So she was; so I was　　　　　　　　　　　　　　　　　 D. So was she; so I was

答案：A

3. --- Our country is becoming richer and stronger.

　 --- ________. (09绥化)

　 A．So it is　　 B. So is it　　 C. It is so

2. -Our country is becoming richer and stronger.

　 　　　　-_______.(09齐齐哈尔)

A. So it is　　 　　　　　　　　　 B. So is it　 　　　　　　　　 C. It is so

1.　　　 --- It’s terribly cold today, isn’t it?

--- Yes. _______ yesterday.(09漳州)

A. So it was　　 B. So was it　　 C. So it is　　 D. So is it

答案：A