10.( ) A . safe B. safely
C. safety
Keys:
1-5CBCAB 6-10AABCB
(H)
When you want to have your eyesight checked, you go to see a doctor.
The doctor makes you __1__ a chart with big and small “Es” on it. Do you know
__2__ that chart came from?
It’s called the Enellen Chart. It __3__ by Herman Snellen, a Dutch
doctor,in 1863.
When reading th chart, you should stand five meters,__4___ from it.
Your eyes should also be at the same __5__ as __6___ line of letters.
You should then read the letters _7___ the top line to the bottom
line. The letters get _8___ as they get nearer the bottom.
Doctors can __9___ if
you are short-sighted ,long-sighted, or if you have good eyesight, by seeing
what lines you can read.
If your doctor thinks
you need ___10_ ,he’ll tell you to go to the hospital to get some..