B. Because they look nice. C. Because they help us stay safe. D. Because they are E. verywhere. 相关知识点: 试题来源: 解析 C。解析:文章最后提到“Understanding traffic signs is essential for safe driving and walking.”,理解交通标志对安全驾驶和行走很重要,即帮助我们保持安全。反馈 收藏 ...
D. All the three colors were once used as "caution". 3. What's the main idea of the passage? A. What is your favorite color? B. Why are "Red,Yellow,Green" used as traffic signals? C. How can we figure out the wavelength of colors? D. What color can green,yellow and red make...
Then, green became “go", and for a long time,ra lways used only green and red to signal trains.Yellow means “caution” because it's almost as easyto be seen as red. Before the mid-1900s, many stop signswere yellow. Because at night, it was impossible to see are d stop sign ...
答案1.C 考查限定词. 题干为:We can see many traffic signs(交通标志)on___sides of the roads.意为"我们能够路的___边看到许多交通标志",选项中,all意为"所有",数量范围为三者或三者以上,any意为"任何,任一",both意为"两个,两个都",every意为"每个",众所周知,路只有两边,故选...
B.are usedC.are usingD.were used 免费查看参考答案及解析 题目: —Why is the robot so popular—I guess it has something to do with ___.A.how can it help people with the houseworkB.how long its batteries can lastC.how much joy do people get from itD.how people are like with its...
celebrate with gusto. Besides, there are also sparkling lighting decorations on the streets and in front of houses, turning particular places into Christmas area. Usually the shops will have their signs advertising sales for Christmas seasons, and the piercing cold is a wonderful chance for people...
are extremely difficult to verbalize in an accurate, intelligible, and concise manner (e.g., angles, pictograms, or ideograms) or are even impossible to verbalize (colors) leads to second thesis—about inadequacy of concept of legal norm as a linguistic utterance in context of traffic signs....
A. We should believe highway signs. B. There are too many highways in the US A. C. You may get lost if you turn off the highway. D. There are two systems used to number highways.2. Which of the following is NOT true according to the text? A. The north-south interstates are ...
---Why do you like monkeys ---Because ___ are smart.A. they B. them C. their 免费查看参考答案及解析 题目: Why was Tony late for the trainA. Because of the bad traffic.B. Because of the bad weather.C. Because of the bad health. 免费查看参考答案及解析 题目: B)从Ⅱ栏中找出...
用所给词的适当形式完成下列句子。 1. We need to be more___ (science) about this problem. 2. Dark sunglasses are used for___ (keep) out the strong sunlight. 3. I am nearly___(confuse) about the___(confuse) traffic signs. 4. Why not consider___(change...