Do you like exercising in the sun? How much sunlight do you get every day? How much time do you spend in the sun? As we all know,enough sunlight is good for our health.It gives us strong bones and good eyesight.It makes us happy and sleep better.Now scientists find out that it can even make you smarter.

Scientists did tests (实验) on mice.They give mice lots of sunlight.After that,the mice produce a special thing in their bodies.Its name is glutamic acid(谷氨酸).Glutamic acid does many things for our body.It can improve(提高) some of our abilities like learning and remembering things.

It is OK to enjoy some sunlight for about an hour every day.But you should be careful because it is summer now.The sun is very strong around noon.Keep yourself away from the sun around the noon,or it may burn your skin.It is best to enjoy sunlight in the morning or before sunset.

Why not go out and enjoy the sunlight with your family or your best friends? I’m sure you can be smarter soon.

1.Scientists did tests on mice__________________.

A. because they want to make the mice smarter

B. to find out why mice are smarter than people

C. to find out if sunlight can make them smarte

D. to find out if they have a special thing in their bodies in the sun

2.The underlined word “produce” in Paragraph 2 may mean”____________” in the passage.

A. protect B. make C. enjoy D. spend

3.What does “it” refer to(指) in in Paragraph 2?

A. Sunlight B. The mouse C. Glutamic acid D. Our body

4.What can we do to make ourselves smarter?

A. Spend an hour in the sun every day B. Play with mice every day.

C. Enjoy sunlight only around noon D. Stay away from the sun.

5.The sunlight can help us in the following EXCEPT_______________.

A. learning things better B. sleeping better

C. becoming stronger D. getting more exercise

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