（3）Though times have changed，falling asleep in class is still quite common among teenagers.
    Why do students sometimes fall asleep in class？An obvious（顯而易見的） reason is lack（缺少）of sleep.However，there are also causes for getting too little sleep.
    Homework is a daily meal for most students，one that can take three to four hours per night.A teenager who wants to be able to take part in any activity besides homework must stay up late to fit everything in.Club activities，sports，computer-game playing，and TV viewing，for example，all lead to teens having less time for both homework and sleep.Sometimes teens lack sleep because of after-school jobs.They want to earn extra money for college，family cost，or simply for clothes.
    Physical problems are another reason that can cause students to fall asleep in class.For example insomnia（失眠），which may keep a student awake at night，causing exhaustion（疲憊不堪） during class hours，is a serious problem ，that now require medical attention.Medical research also support the idea that each person has a body clock that helps to decide his or her sleep pattern.Unluckily these body clocks do not always work according to school timetables.
    The effects of falling asleep in class can be suite serious First of all：sleeping in class is not i good way to show your respect to teachers，in addition，it is highly possible that other students may make jokes about those who sleep in-class.However，the most harmful effect of sleeping in class （missing important points.（4）In the long run_sleepers may end up in failing classes.
    Since teens are probably not going to deal with the problem，falling asleep in class will probably remain an all-too-common sjye.aiuation.It will continue until more teens find a way to balance the personal and social lives with school and work，while still finding enough time to sleep.

根據(jù)短文內(nèi)容回答問題。
（1）According to the passage，why do students sometimes fall asleep in class？

The lack of sleep and physical problems.

The lack of sleep and physical problems.

（2）Are there any students sleeping in class around you？What do you think of the phenomenon（現(xiàn)象）？

Yes，there are.It will continue until more teens find a way to balance the personal and social lives with school and work，while still finding enough time to sleep.

Yes，there are.It will continue until more teens find a way to balance the personal and social lives with school and work，while still finding enough time to sleep.

將短文中劃線的句子譯成漢語。
（3）

盡管時(shí)代變了，但在青少年中，在課堂上睡著仍然很常見。

盡管時(shí)代變了，但在青少年中，在課堂上睡著仍然很常見。

（4）

從長遠(yuǎn)來看，睡眠者可能會(huì)以不及格告終。

從長遠(yuǎn)來看，睡眠者可能會(huì)以不及格告終。

請給短文擬一個(gè)適當(dāng)?shù)臉?biāo)題。
（5）

The reason of falling asleep in class.

The reason of falling asleep in class.