小李开车时看到如图甲所示的交通标志牌，此时汽车内的速度计如图_爱下问搜题

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问题计算题

小李开车时看到如图甲所示的交通标志牌，此时汽车内的速度计如图乙所示。

(1)你能从交通标志牌上了觯哪些信息？

(2)若小李此时汽车的速度大小如图乙速度计所示，汽车此时是否超速？若以这样的车速行驶，再经过多长时间能到达香山出口？

(3)在遵守交通规则的前提下，此汽车到香山出口至少需多长时间？

(4)你对小李有什么忠告？

答案

(1)从交通标志牌上知：此位置距香山出口5 km;此段路程中最高行驶速度是80km/h或者是限速为80 km／h。

(2)汽车此时超速；以这样的车速行驶，再经过180 s到达香山出口。

(3)在遵守交通规则的前提下，此汽车到香山出口至少需225 s的时间。

(4)要遵守交通规则，安全行驶等。

题目分析：（1）标志牌上的信息是：

5km表示：此位置距香山出口5km；

80表示：此段路程中最高行驶速度是80km/h或者是限速为80km/h；

（2）①汽车速度计上显示；

从标志牌知：，所以汽车超速了．

②若，

根据得：；

（3）从标志牌上的信息知：

根据：得；

（4）因为小李超速了，不安全，所以要提醒他注意安全，不能违反交通规则；要遵守交通规则，安全行驶等．

点评：本题要从题中获取信息然后解答问题，问题详细，思路要清晰，需要平时多积累知识，扩大视野．

完形填空

阅读下面短文,掌握其大意,然后从 21～40 各题所给的四个选项(A、B、C和D)中,选出最佳选项,并在答题纸上将该选项标号涂黑。
School was over and I felt quite tired. I sat at the very 21 of the crowded bus because of my anxiety to get home. Sitting there makes me 22 out like a shiny coin in a pile of dull pennies.
Janie, the 23_ , tries to break the uncomfortable atmosphere by striking the match of _ 24 .
I tried to mind my manners and 25 listen, but usually I am too busy thinking about my day. On this day, 26 , her conversation was worth listening to.
“My father’s sick,” she said to no one in 27 , I could see the anxiety and fear in her eyes. “What’s wrong with him?” I asked. With her eyes wet and her voice tight from 28 the tears, she answered, “Heart trouble.” Her eyes 29 as she continued. “I have already lost my mum, so I don’t think I can stand l

osing him.”
I was 30 . My heart ached for her. And this reminded me of the great 31 that my own mother was thrown into when her father died. I saw how hard it was, and 32 is, for her. I wouldn’t like anyone to 33 that.
Suddenly I realized Janie wasn’t only a bus driver. That was 34 her job. She had a whole world of 35 and concerns, too. I suddenly felt very __36____. I realized I had only thought of people as far as what their purposes were in my life. I paid no attention to Janie 37 she was a bus driver. I had 38 her by her job and brushed her off as unimportant.
For all I know, I’m

just another person in 39 else’s world, and may not be 40 . I should not have been so selfish and self-centered. Everyone has places to go, people to see and appointment to keep. Understanding people is an art.

C．conversation

D．disappointment

C．pessimistic

问答题简答题

装置开车初期接收蒸汽时，应注意哪些问题？