11．
Nowadays，we are having a much busier life，and we are using our eyes more than ever before．So we often have tired eyes after a day's work or study．Here are some good methods of protecting eyes against tiredness to keep them healthy．
POSTURE （坐姿）
Get into the habit of paying attention to the way you sit．Try to stick to the proper posture that doctors suggest．
HELPFUL PICTURES
There are some special pictures online that can help relax your eyes．You may download such pictures to your computer or smartphone．When there is nothing far away you can look at to relax your eyes，you can use one of these pictures．A picture with something like a tunnel（隧道）in it is quite popular．Try to look as far into the tunnel as you can for 30seconds（秒）．Do you feel better？
BREAKS
The 20-20-20rule：take a break from the screen every 20minutes for 20seconds and look at something 20feet （about 6meters） away．
EYE EXERCISES
Step 1．Sitting comfortably，imagine there is a clock in front of you and turn your eyes up to 12o'clock．Pause（停頓）for a second，and then lower your eyes to 6o'clock．Pause again，and then repeat this step 10times．Complete the exercise by cupping your hands over your eyes for a few seconds，letting them rest in the darkness．
Step 2．Look at something on the right，Keep your eyes on it and slowly turn your head to the lest as far as possible．Then do the same thing on the left．Repeat the exercise a couple of times．
Step 3．Hold your finger in front of your nose and keep looking at it．Slowly move the finger towards yourself as close as you can without losingfocus（焦點(diǎn)）．Then look outside the window as far as possible．Repeat this several times．
SPORTS
Table tennis is about a small ball traveling at high speed-the best sport to train your eyes and relax the muscles（肌肉） in and around the eyes．Other sports like
like tennis，badminton and kiteflying are also great for relaxing tired eyes．
76．Which of the following methods of protecting eyes is NOT mentioned in the passage？B．
A．Having the proper posture．
B．Looking at something green．
C．Following the 20-20-20rule．
D．Playing some kinds of sports．
77．According to the passage，which of the following pictures can help relax your eyes？D．
78．What does the underlined word'them"refer to（指代）？A．
A．Your eyes．
B．Your hands．．
C．The doctors．
D．The exercises．
79．As for eye exercises，which of the following is TRUE？B．
A．In Step l，you must have a large clock in front of you．
B．In Step 2，you should turn left when you look to the right．
C．In Step3，you should move you finger as far as you can．
D．After finishing each step，you should repeat it a few times．
80．Which of the following is the best title of the passage？C．
A．We must take a break every 20minutes．
B．How to do eye exercises properly．
C．Ways to protect eyes against tiredness．
D．People have tired eyes very easily．
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