关于功率公式P=Wt和P=Fv的说法，正确的是（ ） A．由P=Wt知，只要知道
题型：选择题
问题：
关于功率公式P=
和P=Fv的说法，正确的是（ ）W t
A．由P=
知，只要知道W和t就可求出任意时刻的功率W t
B．由P=Fv能求某一时刻的瞬时功率
C．由P=Fv可知汽车的功率与它的速度成正比
D．由P=Fv可知当汽车发动机功率一定时，牵引力与速度成反比
题型：选择题
阅读理解。
When we talk about stars, especially women stars, it seems that they are always young, pretty and own
attractive body shapes. But recently a Britain's Got Talent (英国达人) star Susan Boyle has changed
our views completely.
Simon Cowell, one of the organizers of the talent show spoke of his surprise over Ms Boyle's voice.
"This lady came up, and I'm thinking, 'This will take five seconds and I can go to have a cup of tea.' That
changed when she began to sing I Dreamed a Dream from Les Miserables. She knew we were going to
have that reaction (反应) and just to see that look of satisfaction on her face midway through . it was one
of my favorite moments," Cowell said.
The performance was posted online and before long, the 47-year-old Scottish woman has been famous
all over the world.
Speaking from her home in Scotland, Ms Boyle said that she hadn't thought of changing her
appearance. She said that her friend helped her with make-up. "I mean, it's meaningless." She added.
Ms. Boyle also spoke of the reason she first began to explore her musical talents. " I was kind of slow
at school, so getting something like singing was a good way of hiding behind that and therefore it built my
confidence.''
1. Susan Boyle had a look of satisfaction on her face when she was singing because _____.
A. she was confident of her singing
B. she was satisfied with the organizers
C. she was pretty and in good shape
D. she sang the song I Dreamed a Dream from Lea Miserables
2. What does the underlined word "views" mean?
A. 见解
B. 预告
C. 复习
D. 景色
3. According to the passage, which is NOT true?
A. It was the musical talents that built Susan's confidence.
B. Susan Boyle was not good at her lessons when at school.
C. Susan Boyle became famous because of her appearance.
D. Simon Cowell didn't think Susan Boyle a good singer at the time sight.
4. What can we learn from Susan Boyle's success?
A. It's never too old to learn.
B. It's easier to succeed at the age of 47.
C. If you have a dream, keep trying to make it come true!
D. If you are not able to study well, to be a singer instead.