题目

科学家发现一些实例，证明地球表面海陆处于不断运动和变化中，下列事例不能作为例证的是（ ） A . 在青藏高原上发现海洋生物化石 B . 海底发现古河道和森林遗迹 C . 日本冲之鸟岛涨潮淹没，退潮露出 D . 极地发现煤田 答案：C Want to know what we students can do to make our city a better place to live in？Why not take part in “Clean & Green Weekend”？Join us，and you can help take care of the environment.We have many kinds of activities for you.Activity One: Park LifeDo you like taking a walk in the park with your friends？If so，why not come with us to clean up the park？And there is a gift for the person who collects the most trash(垃圾)！Meet us at Tao He Park at 9 a．m. next Saturday if you want to join in.Activity Two: The Air You BreatheA great way to make the air we breathe cleaner is planting lots of trees！Trees filter(过滤)slowly a lot of pollutants from the air.So come and help us plant some new ones in Fen He Park at 2 p．m.next Sunday.Activity Three: War on Graffiti(涂鸦)Some people think graffiti is cool.But it is not！We are trying to stop ugly graffiti on beautiful buildings.We are repainting the school walls from 1 p．m. on Saturday.You don't have to bring any tools.Just remember to wear some old clothes!1.Clean & Green Weekend wants to________.A.make our city more beautiful B.have funC.help students meet old friends D.build some buildings2.The students who want to join in the trash collecting activity must meet________.A.at 1 p．m.on Saturday B.at 2 p．m.next SundayC.at 9 a．m.next Sunday D.at 9 a．m.next Saturday3.If we're going to repaint the school walls，we need to________.A.bring some tools with us B.wear some old clothesC.draw pictures well D.plant some trees near the walls4.We might read the above passage________.A.on a wall B.on a school notice boardC.in a newspaper D.on a TV show5.According to the passage，we know________.A.graffiti can make the buildings look cool B.the person who collects rubbish can get a giftC.We can plant trees to improve the environment D.we can draw pictures on the wall