题目内容
8．--When is ________ birthday．--________ birthday is on April 20th．（ ）
| A． | John's； He | B． | John； Him | C． | John's； His |
分析 --约翰的生日是什么时候．
--他的生日是4月20日．
解答 答案：C．考查所有格．句意"--约翰的生日是什么时候．--他的生日是4月20日．"．John's约翰的．John约翰．he他，主格．him他，宾格．his他的，形容词性物主代词．第一个空，用名词所有格John's约翰的，修饰名词birthday生日．第二个空，用形容词性物主代词his他的，修饰名词birthday生日．答案是C．
点评 名词所有格用来表示两个人或事物之间的相属关系，相当于"某人的…"．这种形式只有名词才能用，所以叫名词的所有格．一般是在单数名词后加一个's．具体用法要结合语境，仔细分析．选择合适答案．
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18．Most kids like playing computer．They spend much time sitting at the computer，doing their schoolwork or playing games．But using a computer（41）Dcan be tough on your body．How？
Sitting for a long time in positions that aren't natural for your（42）Acan strain（扭伤） your hands，wrists，back，and eyes．Over time，this can result in pain．
Sitting Square in Your Chair．
The way you sit is important．Sit square in your chair，put your behind in the center（43）Cthe seat．Your legs should bend（弯曲） at the knees and rest on the floor．Most kids are too（44）Ato do this，so use a box of books to place under their feet．
Sit and make sure your back（45）Dthe seat back the whole time．Try not to slouch （低头松肩地坐） or lean over the keyboard while you type．A chair that has lower-back support can help you do this．
Typing Time
When you type，make sure your elbows are bent at 90-degree angles．Your wrists should be straight，not angled up or down so your fingers rest gently on the keys of the keyboard，（46）Cit feels like you have to stretch（伸∽长） your fingers to reach the keyboard，move it（47）Ato you．
All Eyes on this
Any time you're using the computer，your eyes are hard at work．But be kind to them by putting the monitor 18to 20inches away from your face．At this distance，you shouldn't have to lean in to read （48）A is on the screen．
Take a Break
Kids（49）Dsit at a computer for more than 30minutes without a break．Remember to have a rest．When it's time for a break，start with your eyes．Focus on （50）Bfar away by looking out of a window．This gives your eyes a rest．
Sitting for a long time in positions that aren't natural for your（42）Acan strain（扭伤） your hands，wrists，back，and eyes．Over time，this can result in pain．
Sitting Square in Your Chair．
The way you sit is important．Sit square in your chair，put your behind in the center（43）Cthe seat．Your legs should bend（弯曲） at the knees and rest on the floor．Most kids are too（44）Ato do this，so use a box of books to place under their feet．
Sit and make sure your back（45）Dthe seat back the whole time．Try not to slouch （低头松肩地坐） or lean over the keyboard while you type．A chair that has lower-back support can help you do this．
Typing Time
When you type，make sure your elbows are bent at 90-degree angles．Your wrists should be straight，not angled up or down so your fingers rest gently on the keys of the keyboard，（46）Cit feels like you have to stretch（伸∽长） your fingers to reach the keyboard，move it（47）Ato you．
All Eyes on this
Any time you're using the computer，your eyes are hard at work．But be kind to them by putting the monitor 18to 20inches away from your face．At this distance，you shouldn't have to lean in to read （48）A is on the screen．
Take a Break
Kids（49）Dsit at a computer for more than 30minutes without a break．Remember to have a rest．When it's time for a break，start with your eyes．Focus on （50）Bfar away by looking out of a window．This gives your eyes a rest．
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| 42．A．body | B．head | C．foot | D．mind |
| 43．A．to | B．for | C．of | D．on |
| 44．A．short | B．heavy | C．light | D．tall |
| 45．A．arrives | B．reaches | C．gets to | D．touches |
| 46．A．before | B．after | C．if | D．until |
| 47．A．closer | B．farther | C．right | D．left |
| 48．A．what | B．where | C．when | D．how |
| 49．A．have to | B．must | C．needn't | D．shouldn't |
| 50．A．anything | B．something | C．everything | D．nothing． |
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| A． | while | B． | after | C． | before | D． | as soon as |
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