题目

黄河口是我国新增湿地最快的地区，近50年来平均每年造地4万亩，但近年来湿地增长速度减慢。据此回答15—16题。 15．黄河口湿地的成因是                                  A．黄土高原水土流失             B．渤海海区不断下沉 C．海水的堆积作用               D．河流的堆积作用 16．近年来，黄河口湿地增长趋缓的原因是   ①潮流搬运能力增强；②渤海下沉迅速增快；③小浪底枢纽工程蓄水拦沙；④黄河下游段取水Many people like animals and keep one or more as pets(宠物)—dogs, cats and some kinds of birds. If you keep a dog or a cat as a pet, you must know how to look after it. A grown-up(成年) dog needs two meals a day, not more. And it can eat meat, fish, rice and some other things. Dogs like big bones(骨头), but don’t give them chicken bones. Remember to give them much clean water. A dog should have a clean, dry box for sleeping. Washing it once a week is good for its health. If it is ill, take it to a doctor. A healthy dog will bring you more happiness.Be careful when you have chosen(选择) a cat. It has two meals a day with some meat or fish. Cats drink a little milk every day. Sometimes give them vegetables to eat. Don’t forget that they need clean water to drink.Take good care of your pets. They will be your good friends. Maybe they can give you some help when you need.【1】Many people keep ____ as pets.A.pandasB.elephantsC.chickensD.cats【2】What do dogs like eating?A.All the bones.B.Big bones.C.Chicken bones.D.Small bones.【3】A healthy dog can ____ you happiness.A.makeB.giveC.takeD.bring【4】Cats usually drink ____.A.orangeB.milkC.waterD.milk and water【5】Will pets be people’s friends?A.No, I don’t think so.B.Yes, but only a little.C.Yes, they will.D.No, they won’t.