Are you a happy person most of the time? Or do you easily get angry sometimes? Everyone has a different temperament (脾气). It is usually be1ieved that both genes (基因) and environment may affect people's temperaments in different ways. But now scientists have found that the season of birth also plays a role.
Scientists from Budapest, Hungary, studied 400 university students. In the study, the students needed to finish a questionnaire (问卷). The purpose of it was to find out which of four kinds of temperaments they most had. From the questionnaire, scientists found that the students always answered something like "My mood often changes for no reason" and "I love to deal with new projects, even if it is risky". These answers were then matched with their birthdays.
They discovered that people born in summer easily change between sad and happy moods compared to people born in winter. Those who always feel positive are mostly born in spring and summer.
The study also found that those born in autumn less probably had a mood of depression which may easily drive them to cry, while those born in winter were not easier to be angry.
Scientists said that this was probably because the seasons had an influence on certain chemicals in the human body. And the chemicals are important to control people's moods even in adult life.
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"It seems that when you are born may increase or decrease your chance of developing certain mood disorders (紊乱)," lead scientist Xenia Gonda told The Telegraph.
What probably can't affect people's temperaments according to Paragraph 1?
A  Genes.         B. Ages.
C. Seasons.      D. Environment.
What does the under1ined word "       depression " most probably mean?

A．Sadness.	B．Happiness.
C．Surprise.	D．Excitement.

Which of the following sentences is NOT true from the passage?
A People born in summer change their moods more easily.
B.The season of birth has an influence on humans' moods.
C. There were 400 middle school students taking part in the study.
D. The answers to the questionnaire were matched with their birthdays .
What will the writer most Probably write about on  _____________ ?

A．How many kinds of moods thee are.

B．What can change the human body most.

C．How the certain chemicals affect the moods.

D．Whether the students will continue their study.

What's the best title of this passage?

A．Seasons and Moods

B．The Influence of Genes

C．Moods and Health

D．The Importance of Birthplaces