阅读理解。
The sun was just coming up when I headed out to work last May at 6 a.m. Not quite dark, but dark
enough to need my headlights. I turned onto one of the lonely, rural country roads.
Maybe it was because I was listening to the radio, maybe it was because I was already thinking about
some projects at work, but I didn't spot the dark object on the road until it was too late. I ran over it and
felt the back left tyre pull, and then sink. I stopped and got out of the car.
No mystery here-my back left tyre was cut like a loaf of bread. Back 50 yards was a piece of sharp
iron I'd run over. I've never changed a tyre. I looked up the road. Not a car in either direction. The nearest
service station was miles away. I threw up my hands. Then I remembered-my cell phone! I powered it up
before realizing, I didn't know who to call.
Wouldn't you know it, I spotted a car coming from the opposite direction. The driver slowed as he
approached. I guess he could see I was in trouble. He stopped his car, got out and immediately saw the
trouble. "Madam, would you like me to change that tyre for you?" he asked. The man couldn't have been
more friendly. I was so frightened out there and he put me completely at ease. "There," he said, after putting
on the spare, "you're all set to go."
"Good thing for me that you were driving this way," I told him, as I climbed back into my car.
"Funny you should say that," he said. "Just like you, I was heading to work, but my job's in the opposite
direction. I made a wrong turn at some point. I don't know what I was thinking."
1. The writer didn't notice the object on the road because _____.
A. it was rather dark then
B. she didn't use her headlights
C. there was much traffic
D. she was careless when driving
2. From Paragraph 4 we learn that _____.
A. the writer felt quite anxious
B. no one would like to help the writer
C. the writer was a new driver
D. the cell phone should be powered up
3. What did the man do when he saw the writer?
A. He stopped and laughed at her.
B. He walked over to frighten her.
C. He helped her without hesitation.
D. He drove away in the opposite direction.
4. The end of the story tells us that the man _____.
A. went a wrong way
B. felt the writer funny
C. didn't know what he was doing
D. knew the writer needed help
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已知三条直线l1:y=2x,l2:x+y-3=0,l3:x+ay-5=0能构成直角三角形,求a的值.
若有理数数x,y满足xy≠0,则m=
|
图甲是“观察水沸腾”的实验装置图
(1)安装该实验装置时,应该先固定A、B两铁圈中的 铁圈.
(2)水沸腾时温度计示数如图乙所示,由此可知,水的沸点是 ℃.
若有关系模式R(A,B,C)和S(C,D,E),对于如下的关系代数表达式:
E1=πA,D(σB<’2003’
E3=πA,D(σB<’2003’(R)
正确的结论是 (44) ,表达式 (45) 的查询效率最高。
(45)处填()。
A.E1
B.E3
C.E2
D.E4
辨别寒热真假时,真象常反映在()
A.皮肤
B.四肢
C.舌、脉
D.面色
E.以上均非