题目

不论远近的物体，正常人都能看得清楚，这是由于（  ） A． 视网膜可以前后移动          B． 晶状体凸度可以调节 C． 瞳孔大小可以改变                D． 眼球的前后径可以变化 答案：BEarth Day is on April 22nd．People say thanks to the Earth and learn ways to keep the Earth safe and clean．But saving the Earth is not just for grow-ups．Kids are also taking an active part in it.The American writer and filmmaker Lynne made a film called Young Voices for the Planet．It lists a lot of stories about different kids who help to keep our environment clean.Team Marine, US A group of students at Santa Monica High School started an organization called Team Marine．They tell people why plastic bags are bad for sea animals and environment．In 2011, they successfully made lawmakers （立法者） in their city stop people using plastic bags.Felix, 15, Germany In 2007, a 9-year-old boy, Felix, started a club，Plant for the Planet．It encourages children around the world to plant trees in their own countries．Felix helped plant 25 million trees in Germany and 120 million trees worldwide.Alec, 17, US When he was 12, Alec set up Kids VS Global （全球的） Warming．It teaches kids about weather change and ways to stop the world getting warmer and warmer．Alec travels widely to encourage people to help stop global warming．He has given more than 70 talks across the country.Olivia, 13, US When Olivia was 11, she heard about the 2010 oil spill （漏油） in the Gulf of Mexico．She painted 500 pictures of birds to raise money for the clean-up．She raised more than $200,000 to protect （保护） birds and other wild animals.1.What is the purpose of setting up the “Earth Day” and who can do something for the Earth?A．To keep the earth peaceful and beautiful by adults and kidsB．To keep the earth balanced by adults onlyC．To keep the earth safe and clean by adults and kidsD．To keep the earth safe and clean by kids only2.Young Voices for the Planet made by Lynne is ________.A．a book B．a TV playC．a film D．a club3.According to the passage, we know ________ doesn’t agree to use plastic bags.A．Team Marine B．Felix C．Alec D．Olivia4.Alec travels widely to encourage people to ________.A．raise moneyB．plant treesC．protect wild animalsD．help stop global warming5.The passage is mainly about how ________.A．kids are saving the EarthB．parents are planting treesC．students are raising moneyD．grow-ups are using plastics bags