There are about 5，000 different kinds of ladybugs in the world．They come in many different colors．Their bright colors warn other animals or insects not to eat them．Ladybugs taste bad．A bird or a frog that eats a ladybug will remember the bright colors and it will not eat another ladybug with the same colors again．When ladybugs are in danger，they will give out a fluid（液體）that tastes terrible．
In many cultures，the ladybug is considered to be a symbol of good luck．Most ladybugs are kind to humans．They eat other insects which destroy crops．One ladybug can eat up to 5，000 insets in its lifetime．
Ladybugs have six short legs．They live in many different places，including green lands，forests，cities，the countryside and along rivers．Different ladybugs have different spots（點(diǎn)）．Some of them don't have spots at all．The most common kind in North America is the 7-spotted ladybug．The 7-spotted ladybugs are the most active from spring to autumn．When the weather turns cold，they look for a warm place to sleep，such as under stones or in houses．
根據(jù)短文內(nèi)容，判斷下列句子正（T）誤（F）．
（1）Ladybugs can give out a terrible fluid to protect themselves． TT
（2）In many cultures ladybugs are believed to bring good luck． TT
（3）Most of the ladybugs are harmful to crops． FF
（4）Ladybugs live in many places except cities． FF
（5）Winter is the best time for 7-spotted ladybugs to go out for food． FF
【考點(diǎn)】人與社會(huì)．
【答案】T；T；F；F；F
【解答】
【點(diǎn)評(píng)】
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發(fā)布：2024/4/20 14:35:0組卷：227引用：8難度：0.5
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3．Do your eyes jump a few times a second over a period of time？A jumping eye can happen to anybody at any time.There are several reasons for a jumping eye.Let's have a look at it!
Tiredness
Not getting enough sleep or working for too long without rest may cause our eyes to complain.Scientists aren't sure why，but they've found that getting more rest will make our eyes feel better.（1）
Dry eyes
More and more people work office jobs.（2）This unhealthy way of life can lead to dry eye syndrome（DES干眼癥）.When our eyes are too dry，they can't help jumping to keep them wet.To stay away from DES，you can use eye drops if you use the computer for more than seven hours a day.（3）
Stress（壓力）
This is the most important reason for a jumping eye.It does harm（傷害） to our eyes if it lasts for too long.（4）To solve the problem，we can see our friends or relax ourselves to reduce（減少） the stress that might lead to jumping eyes.
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