Are you carrying too much on your back at school? Lots of kids(孩子) at the same age as you are. Not only are students in China 1 from this problem, but kids in the United States are 2 fed up with(飽受……之苦) heavy school bags.

　　Experts are starting to 3 that more and more young students are having back and neck problems as a result of school bags 4 too heavy for them. “It’s hard for me to get up the 5___ with my bag because it’s so heavy,” said Rich Hammond, 6 11-year-old student in the US. Rick is among the students who have 7 backpacks(背包)with two straps(帶子) to carry them, 8 a number of other students choose rolling backpacks. But even with rolling backpacks, 9 up stairs and buses with them is 10 a problem for kids. Many of them have hurt their knees, backs or necks because of heavy school bags.

　　But how much is too 11 ? Experts say students should carry 12 more than 10 to 15 per cent of their own body weight. Scott Bautch, a Wisconsin 13 doctor, said kids under 4th grade should 14 with 10 per cent. But it’s also important that older kids don’t go 15 15 percent, because their bones are still growing. Bautch explained that there are other injuries caused by backpacks. “Kids are 16 their balance and falling down with these backpacks,” he saiD.

　　Parents and teachers are starting to tell the kids to only take 17 library books they will be reading that night. Some teachers are using worksheets(作業(yè)紙) or 18 workbooks for students to take home. One of the best answers is, as some 19 themselves suggested, to have no homework 20 !

　　1. A.meeting B.facing C.experiencing D.suffering

　　2. A.already B.always C.yet D.also

　　3. A.explain B.say C.worry D.announce

　　4. A.being B.be C.are D.is

　　5. A.schools B.stairs C.houses D.homes

　　6. A.this B.that C.a D.an

　　7. A.special B.unusual C.ordinary D.regular

　　8. A.when B.but C.then D.and

　　9. A.getting B.climbing C.going D.turning

　　10.A.only B.still C.even D.just

　　11.A.more B.very C.much D.many

　　12.A.no B.not C.any D.much

　　13.A.children B.student C.bag D.back

　　14.A.carry B.stay C.take D.bring

　　15.A.about B.under C.beyond D.before

　　16.A.keeping B.missing C.losing D.making

　　17.A.home B.class C.school D.city

　　18.A.valuable B.thin C.important D.interesting

　　19.A.reports B. teachers C.parents D.kids

　　20.A.at all B.after all C.in all D.for all

　　參考答案及解析

　　1―5 DDCAB 6―10 DDBAB 11―15 CADBC 16―20 CABDA

　　1.選D。根據(jù)后面的also fed up with(也飽受……之苦)選定。

　　2.選D。not only…but also系習(xí)慣搭配。

　　3.選C。學(xué)生負(fù)擔(dān)重，是一個人人皆知的現(xiàn)象，無需專家指出，故排除A、B、D三個選項。

　　4.選A。of后是一個介詞短語，故選非謂語動詞being。

　　5.選B。由副詞up可排除另三個選項。

　　6.選D。此處表示泛指，故用不定冠詞，又由于eleven以元音開頭，所以選擇an。

　　7.選D。這里的regular等于usual，意為“正常的、通常的”。

　　8.選B。前后意義在此形成轉(zhuǎn)折。

　　9.選A。上文已呈現(xiàn)過這一說法，此外，另三個選項不能與bus搭配。

　　10.選B。根據(jù)even選定。

　　11.選C。 由主語中的much推定。

　　12.選A。no more than意為“僅僅”。not more than意為“不超過”，須后接一個固定值，10 to 15表示的是一個區(qū)間，數(shù)值并不固定。

　　13.選D。通過排除法選定。兒科醫(yī)生用baby doctor，所以A是不能選用的。

　　14.選B。stay表示“堅持，承受”。另三詞后面不能用with。

　　15.選C。 beyond意為“超出”。前面已交待過學(xué)生背負(fù)的重量應(yīng)在自身體重量的10%至15%之間，即不能“超出”15%。

　　16.選C。背著背包跌倒的原因就是身體“失去”平衡。

　　17.選A。第18空后再現(xiàn)了take home這一說法，此外，另三個詞是名詞，應(yīng)排除。

　　18.選B。這里討論的是作業(yè)的量，而不是質(zhì)，故選thin。

　　19.選D。全文談的是學(xué)生學(xué)習(xí)負(fù)擔(dān)沉重的事，因此，由themselves ，我們首先聯(lián)想到的是kids。

　　20.選A。at all在否定句中表示強調(diào)。