1.What is the authors main purpose in the passage?

　　A.To explain the specific functions of various hormones.

　　B.To provide general information about hormones.

　　C.To explain how the term hormone evolved.

　　D.To report on experiments in endocrinology.

　　2.The passage supports which of the following conclusions?

　　A.The human body requires large amounts of most hormones.

　　B.Synthetic hormones can replace a persons natural supply of hormones if necessary.

　　C.The quantity of hormones produced and their effects on the body are related to a persons age.

　　D.The short child of tall parents very likely had a hormone deficiency early in life.

　　3.It can be inferred from the passage that before the Bayliss and Starling experiments, most people believed that chemical integration occurred only___.

　　A.during sleep.

　　B.in the endocrine glands.

　　C.under control of the nervous system.

　　D.during strenuous exercise.

　　4.The word liberate could best be replaced by which of the following?

　　A.Emancipate

　　B.Discharge

　　C.Surrender

　　D.Save

　　5.According to the passage another term for exocrine glands is___.

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