题目

图为一横波发生器的显示屏，可以显示出波由0点从左向右传播的图像，屏上每一小格长度为1cm。在t＝0时刻横波发生器上能显示的波形如图所示。因为显示屏的局部故障，造成从水平位置A到B之间（不包括A、B两处）的波形无法被观察到（故障不影响波在发生器内传播）。此后的时间内，观察者看到波形相继传经B、C处，在t＝5.5秒时，观察者看到B处恰好第三次出现波谷，下列判断正确的是 A．该波的振幅为10cm             B．该波的波长为12cmC．该Books are our best friends. They are very quiet, but we can always find both fun and knowledge once we open them. Here are two good books you can read during the holiday.Book: The Little Prince(小王子)French writer :Antoine de Saint-ExuperyBoth adults（成年人）and children love this classic book. It is about the adventure of a young prince. It shows the importance of innocence (纯 真 ) ,imagination（想象力）and love. The little prince comes from planet B-612. In his eyes ,adults are all very strange. Unlike them, he sees the essence(本质) of things .He cares more about a flower and a sheep than the “ important” things of adult world.The prince lives on his planet with a rose. He loves the rose very much. But he soon feels tired and leaves his planet. He meets many more strange adults on other planets. On Earth, he discovers interesting things such as a snake, other roses and a fox. The fox tells him a secret :Only the heart can discover the most important things. This helps the prince realize his love for the rose and he goes back to his planet.Book: To Succeed on One’s Own( 独自成功 )American Writer :Liu YongWriter Liu Yong from Taiwan wrote this book for his daughter .It can help young people succeed. The book teaches you about student-teacher relationship, how to use your free time and even what kind of clothes to wear. It answers many of teenagers’ most common questions. Liu uses his daughter’s stories as an example to help readers understand the principles (原则). His book is far from boring. There are lively stories and dialogues,with objective analysis(客观分析),hope and confidence (信心）from a good father.根据短文内容，选择最佳答案。1.Where does the writer of “ The Little Prince”come from?A. England. B. France. C. America. D. China.2.What does the prince do after the fox tells him a secret?A. He cares more about a flower and a sheep.B. He meets more many strange adults on other planets.C. He discovers interesting things such as a snake, other roses and a fox.D. He realizes his love for the rose and gets back to his planet.3.What does “ The Little Prince”talk about? It’s about.A. The adult worldB. The planet B-612C. A rose andD. The adventure of a young prince4.Who did Liu Yong write “ To succeed on one’s own” for?A. His daughter. B. His students.C. Teenagers. D. Young people5.From the passage, we know that we can always find in books.A. the importance of innocence, imagination and loveB. the answers to many of teenagers’ most common questionsC. the objective analysis(客观分析)，hope and confidenceD. Both fun and knowledge.