In the Blink of an Eye
Read the passage. Then, answer the questions. (Please refer to the attached file)
1. Which of the following best defines the term tear film?
A. an oily substance that prevents tears from evaporating too quickly
B. a sad movie that causes many audience members to cry
C. a mixture of oil, tears, and mucus that cleans and hydrates the eyes
D. tiny particles of dust that irritate the eyes and cause them to produce tears
2. Write T if the statement is true. Write F if the statement is false.
____ Blinking is done automatically.
____ The more an eyelid blinks, the drier it becomes.
____ Our eyelids blink about 12 times each minute when we are awake.
____ Blinking helps prevent our eyes from drying out.
3. In addition to lubricating our eyes, what is another benefit of blinking?
_________________________________________________________________
4. What is the main idea of the third paragraph?
_________________________________________________________________
