题型:阅读选择 题类:常考题 难易度:普通
仁爱科普版初中英语2016年九年级上册Unit 2 Saving the earth. 单元检测题
A
Air pollution is one of the most common types of pollution in the world nowadays. It is quite serious in many places, especially in big cities. It can do great harm to our environment such as making the earth warmer, causing acid rain or destroying the ozone layer. As for human beings, air pollution causes all kinds of breathing problems.
There are several reasons for air pollution. Firstly, many cities have a lot of factories and there we need to make food, clothing and other things. Every year these factories pour millions of tons of smog into air. Secondly, power factories can also give out harmful air. For example, in 1986 there was a bad accident at a nuclear power station in Russia. A cloud of radiation crossed the whole Europe. It is said that 125,000 people died in Russia as a result of illnesses caused by this accident. Thirdly, there are more cars in cities now. Once they are out in the streets, they will take in fresh air and give out dirty gas. Besides, smoking cigarettes also makes air pollution worse as will as damaging(损害) our health.
Essential hiking safety tips for beginners
●Never hike alone on unknown trails(路线)
One of the key rules of hiking safety is to avoid hiking alone on unfamiliar trails. {#blank#}1{#/blank#}If possible, choose experienced hikers to accompany you. Their knowledge of the trail can be invaluable(极有用的) in keeping you and the others with you safe and on track.
●Always plan ahead
Planning ahead is always important. {#blank#}2{#/blank#}. In terms of hiking safety tips, the most important advice to remember is careful planning.
●Share your plans
Before heading out on a hike, make sure to inform(知会) someone outside your hiking group about your planned route and schedule. Provide details such as the trail you'll be taking, your expected return time and any emergency contacts(紧急联系人). {#blank#}3{#/blank#}
●Never leave without a first-aid kit(急救箱)
Don't pack light just because you are going on a short hike. Certain items should never be missing from your backpack. One of these is a first-aid kit.
Remember, any hiking trip can go wrong {#blank#}4{#/blank#}. Packing a first-aid kit allows you to take quick action in case of injury. This way you can keep the situation under control before rescuers arrive, if they are needed.
●{#blank#}5{#/blank#}
Don't try to impress others and don't set your expectations too high. Start with low-to medium-difficulty(低到中等难度的)shorter trails and plan your trips to aim for ideal(理想的)weather. Even experienced hikers can have problems if they lose focus. This is why, as a hiking beginner, it's really important to remember the basic safety rules for hiking.
A. Know your limits and set your own pace B. You can also take extra maps and guides from the park office C. This way, they can help locate you quickly if something goes wrong D. If you want to stay safe, it's important to always be ready for the worst E. Always hike with a companion or a group, especially when you're just starting out F. This is true whether you are going on a long camping trip or a one-day hike in your local area |
试题篮