问题 填空题

星期天爸爸开车带着小明去开封游玩,当汽车开到郑开大道起点时,小明看到路旁的标志牌如图所示,汽车上的速度计示数如图所示,小明提醒爸爸应采取     措施。在遵守交通规则的情况下,他们到达开封最快需要       min.

答案

减速    、54

析:(1)交通标志牌“80”是限速的标志,速度不能超过80km/h;

(2)在遵守交通规则的情况下,汽车最大速度为80km/h,知道到开封的距离,根据速度公式求到达开封最快需要的时间.

解:

(1)由速度计得出汽车的行驶速度v=90km/h,标志牌上的数字“80”表示的意思行驶速度不能超过80km/h,所以汽车超速行驶,小明提醒爸爸应采取减速措施;

(2)v最大=80km/h,从此标志牌处匀速到达开封,最快需要:

t===0.9h=54min.

故答案为:减速;54.

点评:本题考查利用速度公式计算时间,明白交通标志牌所表示的意义是本题的关键.

完形填空

完形填空

阅读下面短文, 掌握其大意,然后从每题所给的A、B、C和D四个选项中,选出最佳选项:

It is always interesting to visit another country, especially for those who have never traveled a great deal. Foreign __1__ can be very educational for __2__ if he is interested enough to make preparations beforehand. Learning the language of the new country would be __3__ for the traveler, but the benefits of __4__ an effort would become obvious immediately __5__ his travel. It may not seem important to him when he comfortably stays at home, but knowing __6__ to order a meal or rent a room is necessary for the newcomer in a strange country. Without __7__ the language, it is very difficult for the stranger to __ 8__ the people of the new country and their customs.

To be sure, he can see places and things without the use of a language, but places and things are not the heart of any country. To get the greatest __9__ from a trip to another country, it is __ 10__ important for the visitor to have an understanding of the language.

(  ) 1. A. travel     B. country      C. language    D. people

(  ) 2. A. someone B. everyone    C. anyone       D. no one

(  ) 3. A. usual      B. easy    C. difficult     D. interesting

(  ) 4. A. so   B. what   C. quite   D. such

(  ) 5. A. after       B. before C. for      D. at

(  ) 6. A. why       B. who    C. how    D. when

(  ) 7. A. hearing   B. knowing     C. saying D. reading

(  ) 8. A. see  B. recognize   C. understand  D. believe

(  ) 9. A. benefit   B. success       C. satisfaction D. money

(  ) 10. A. how     B. indeed C. also    D. finally

单项选择题