题目

下列变化中，不属于缓慢氧化反应的是 ( ) A . 食物腐败 B . 蜡烛燃烧 C . 钢铁生锈 D . 呼吸作用 答案：B语法填空:用所给单词的适当形式填空，未提供单词的根据上下文填入适当的词。Exercising helps people to keep healthy. But common sports such as playing basketball and swimming1. (like) by fewer and fewer people. There are lots of other ways2. (exercise). One good way is hiking.What is hiking? 3. (Hike) doesn’t really mean taking a long walk. Often, hiking 4. (include) going up or down a hill. Most people do it in 5. countryside, but you can also do it in town. During hiking, you can enjoy the beautiful view, watch the 6. (interest) plants or animals and build up your body — especially when you walk up the hill. However, sometimes hiking can be dangerous 7. you are not careful enough.Hiking doesn’t really need any special equipment (装备). All you need is a comfortable pair8. shoes, some food and water. The shoes are very important, or you’ll have trouble 9. (move) forward and you may easily feel tired. The food and water are also important because enough energy10. (provide) by them.