If you are writing or studying, it makes much difference where the light comes from. People use  36  and pens every day. They have to be very careful about the  37  of the light because the light shines on their work.
Every  38  gets its light either from daylight  39  the window or from the lamps,   40  no matter what kind of light it is, the way it shines is very important to the eyes.
Take a book and sit with your  41  towards the window, and try to read. Your shadow(影子) falls all over the page and makes it  42  for your eyes as if you were in a  43  room. Now turn around and face the window. The page is in shadow again,  44  the bright light is in your eyes.Try sitting with your  45  side towards the window. This is very good for reading, but if you were writing, the shadow  46  fall across the page and trouble you  47 .There is another way – sit  48  your left side to the window. Now everything is perfect for  49   as well.
Whatever kind of light is in the room, the rule about the right way to sit is  50  the same. So you see different ways to sit make much difference in writing or studying.
小題1:
A．eyesB．headsC．booksD．hands
小題2:
A．roadB．pathC．wayD．trail
小題3:
A．houseB．womanC．manD．a(chǎn)nimal
小題4:
A．fromB．throughC．intoD．inside
小題5:
A．butB．untilC．ifD．when
小題6:
A．sideB．backC．bodyD．front
小題7:
A．good B．badC．usefulD．clear
小題8:
A．brightB．cleanC．dirtyD．dark
小題9:
A．whileB．orC．ifD．till
小題10:
A．frontB．backC．leftD．right
小題11:
A．can B．mayC．has toD．ought to
小題12:
A．fewB．a(chǎn) fewC．littleD．a(chǎn) little
小題13:
A．by B．withC．a(chǎn)gainstD．near
小題14:
A．speakingB．readingC．writingD．playing
小題15:
A．onlyB．neverC．hardlyD．a(chǎn)lways

小題1:C
小題1:C
小題1:A
小題1:B
小題1:A
小題1:B
小題1:B
小題1:D
小題1:A
小題1:D
小題1:B
小題1:D
小題1:B
小題1:C
小題1:D

小題1:C。人們每天使用書本（books）和筆。
小題1:C。他們不得不非常注意他們工作時(shí)光線的照射方式（way）。
小題1:A。房屋（house）內(nèi)的光線，要么來自（through）窗外的自然光，要么是燈或電力。
小題1:B。through通過。解析見上題。
小題1:A。但（but）無論使用的哪一種來源的光，照射在書本或我們工作時(shí)的燈光對(duì)眼睛有重要的影響。
小題1:B。拿一本書，背（back）朝窗戶坐下，試著閱讀。
小題1:B。你的影子完全投射在書面上，對(duì)你眼睛造成的壞影響（bad）就如同你在一個(gè)黑（dark）屋子里讀書。
小題1:D。dark黑暗的。解析見上題。
小題1:A。此時(shí)光線射進(jìn)了你的眼睛里，但是（while）書面是暗的。
小題1:D。試著將身子右側(cè)（right）對(duì)著窗戶坐下。
小題1:B。may也許。但如果你是在書寫，你手的影子會(huì)映照在書面上從而使你的視覺受到一些干擾。
小題1:D。a little一點(diǎn)，一些。解析見上題。
小題1:B。那么還剩下一種方法了，將身子左側(cè)對(duì)著窗戶坐下。
小題1:C。此時(shí)一些都完美了，無論是書寫（writing）還是閱讀。
小題1:D。always一直，總是。無論房間里是哪一種光線，這種正確落坐的方法都是同樣適用的。
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