题型：阅读理解 题类：常考题 难易度：普通
浙江省嘉兴市2016-2017学年高二下学期英语期末考试试卷
Floods are second only to fire as the most common of all natural disasters.They occur almost everywhere in the world,resulting in widespread damage and even death.Consequently,scientists have long tried to perfect their ability to predict floods.So far,the best that scientists can do is to recognize the potential for flooding in certain conditions. There are a number of conditions,from deep snow on the ground to human error,which cause flooding.
When deep snow melts it creates a large amount of water.Although deep snow alone rarely causes floods,when it occurs together with heavy rain and sudden warmer weather it can lead to serious flooding.If there is a fast snow melt on top of frozen or very wet ground,flooding is more likely to occur than when the ground is not frozen.Frozen ground or ground that is very wet cannot absorb the additional water created by the melting snow.Melting snow also contributes to high water levels in rivers and streams.
Rivers that are covered in ice can also lead to flooding.When ice begins to melt,the surface of the ice cracks and breaks into large pieces.These pieces of ice move and float down the river,They can form a dam in the river,causing the water behind the dam to rise and flood the land upstream.If the dam breaks suddenly,then the large amount of water held behind the dam can flood the areas downstream too.
Broken ice dams are not the only dam problems that can cause flooding.When a large human-made dam breaks or fails to hold the water collected behind it,the results can be devastating.Dams contain such huge amounts of water behind them that when sudden breaks occur,the great force of the water is like a great tidal wave.The dam waters can travel tens of kilometres,cover the ground in metres of mud and litter,and drown and crush every thing and creature in their path.
Although scientists cannot always predict exactly when floods will occur,they do know a great deal about when floods are probably going to occur.Deep snow,ice-covered rivers,and weak dams are all strong conditions for potential flooding.
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Anyone who has ever tried to stop smoking knows how difficult it is to quit. There is no lack of information about how unhealthy smoking is for you- not to mention the unpleasant smell. So why would teens ever begin to smoke?
{#blank#}1{#/blank#} Research shows that the majority of smokers lit up their first cigarette in their early or mid-teens, precisely at a time when children are beginning to establish their own identity apart from their parents. Smoking can be an act of rebellion(反抗) against parents or authority figures, as well as a way to fit in with others and feel accepted.
Here are some things that parents can do to help a child stay smoke-free.
Start talking to your teen about how bad smoking is for him early, well before his teens. Keep talking, too. {#blank#}2{#/blank#}
{#blank#}3{#/blank#} For example, smoking makes your hair and clothing smell bad, stains the teeth, and reduces your lung power to play sports.
{#blank#}4{#/blank#} Talk about the addictive power of smoking and tell him while those few cigarettes are his choice, the addiction that occurs shortly afterwards makes him powerless to decide whether or not he wants to light up.
Work on self-esteem(自尊) and self-confident with your teen. Much of the attraction of smoking is to gain acceptance. {#blank#}5{#/blank#}
A.Young teens live in the moment, too. B.Play on your child's desire to make his own choices. C.The answer lies in the develop-mental stage of your teens. D.Give your child the facts, but focus on the things he can relate to. E.Help your teen to feel good about himself without having to smoke. F.One discussion will not be enough to help your child not to smoke. G.They won't be aware of how powerful addictive smoking is in a very short time. |
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