题型:阅读选择 题类:常考题 难易度:普通
浙江省台州市天台县2018-2019学年七年级下学期英语期末考试试卷(含小段音频)
What is the first thing you want to do when you see someone yawn(打呵欠)? You want to yawn, too! Yawning is contagious.
Scientists have found that all people yawn. Babies start to yawn even before they are born. When a baby is inside its mother, he or she yawns. When young children are about one year old, they start to yawn when they see others yawning. That's why scientists think yawning is contagious.
But why do we yawn? Well, scientists are not really sure. Some think we yawn because we feel bored. Others believe yawning has something to do with breathing(呼吸). When there is too much carbon dioxide( CO2 ) in our bodies, our bodies will tell the brains(大脑) to breathe deeply. That causes a big yawn. In 2007, scientists said people yawned to cool down their brains. These scientists found people yawned more often if they were warmer than others.
Scientists are trying to find out why yawning happens and why it is so contagious. But they are only sure that when one person yawns, everyone else nearby wants to yawn, too.
①People yawn because they are bored
②People yawn to make them look funny
③People yawn to cool down their brains
④People yawn to cut down carbon dioxide
get warmed up lose interest in putting on feel safe stay healthy |
How to keep on your exercise plan during winter? Here I'll give you some suggestions.
To stay active during the winter, you should first make it as easy as possible to do your exercise. Second, make something different before you {#blank#}1{#/blank#}doing exercise. The following advice will give you some ideas for making winter exercise more comfortable and more enjoyable.
Put your sports clothes in the dryer. If you want to exercise outside, you might keep the clothes in the dryer for a few minutes before that. It's often harder to {#blank#}2{#/blank#}when it's cold outside. {#blank#}3{#/blank#}clothes fresh from the dryer is just one way to get your body warm.
Take a hot shower. If it's really cold outside, you might even try a quick shower to get yourself warm before you do exercise.
Walk indoors. Walking is a good way to {#blank#}4{#/blank#}. To get out of cold weather of winter, you can simply walk indoors, probably in the living area of your room. Walking indoors makes you {#blank#}5{#/blank#}and gives a warm temperature to do it.
First Aid: Nosebleeds Keep calm and stay in a safe place. Press both sides of the nose while the patient sits and leans (倾斜) forward. If bleeding continue, press harder until bleeding stops. Call 120 for help if:— Bleeding doesn't stop in 15 minutes. — Bleeding is heavy. — The patient has trouble breathing. |
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