题目

商品谷物农业的基本特征是（） ①生产规模大 ②机械化水平高 ③劳动力丰富 ④农业科技发达 A．①②             B．②③             C．③④             D．①④ 答案：A阅读下列短文,从每小题所给的A、B、C、D四个选项中选出一个最佳选项。Going GreenGreen is no longer just a color. It is a new way of thinking about the world and a way of living your life. It's catching on all over the world. More and more people decide to “go green” because they know that we only have one planet to live on. We won't be able to live on it much longer if we keep wasting energy, and destroying(破坏) our home with air, land, and water pollution.“Green Living” means:Understanding that your choices affect(影响) not just you, but everybody everywhere.Understanding that your choices affect not just today, but the future.Understanding that when we talk about “saving the planet” or “saving the environment,” we are actually talking about saving ourselves!You may be thinking: “Hey, I'm just one person, on a planet with billions. I can't really make a difference.” Well, have you ever seen a group of people do “the wave(波浪)”? It always starts off with one or two people, jumping up and down like crazy. Soon thousands of people are joining in. “Going green” is just like that. It starts with small, simple actions. It can soon build into a wave that will change the whole planet and lead us all to healthier, happier lives.Many students have already shared with us their efforts to help the environment:Gabrielle, 12, writes, “I have helped my community plant a garden and I ride my bike or skateboard to school.”Kaitlyn, 10, says, “Lots of paper towels are thrown away, so I use a reusable cloth towel to dry my hands instead.”“I always recycle(重复利用)” says Natalie, 13. “You can call me a recycler! I always look at the bottom of things. I want to see whether they have the little sign that tells you it can be recycled. So I almost recycle everything!”Now it's your turn to think about how you can “go green”. Make important choices and take actions to improve the environment right around you and the health of the whole world.（1）What does the expression “catch on” in Paragraph 1 probably mean?A.Go worse.B.Come to an end.C.Get help.D.Become popular.（2）From the passage we can learn that ______.A.our choices can't affect the futureB.one person can't make a differenceC.our planet is destroyed by pollutionD.going green starts with small actions（3）The writer may agree that ______.A.going green is hard for studentsB.going green means changing othersC.going green is actually a choiceD.going green remains far away from us