题目内容
My mother has a good ______habit and she likes _____food.
A. eating; a healthy B. eating; healthy
C. eating ; health D. eat ; healthy
练习册系列答案
相关题目
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．
| 41．A．too many | B．many too | C．much too | D．too much |
| 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． |
19．The book was so interesting that he read it for four hours _______ he realized it．（ ）
| A． | while | B． | after | C． | before | D． | as soon as |