Which of the following statements is true？
A. The brain of an aged person shrinks 5% every 10 years.
B. The brain of an adult person shrinks 2.5% every 10 years.
C. The cerebrospinal fluid of a person with 4 years of education may increase only slightly.
D. The cerebrospinal fluid of a person with 8 years of education may increase by 17.7 millimeters.
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The methods the villagers of Bat Trong use to mold, fire and hand-paint pottery can date back to 16th century.
A. Y
B. N
C. NG
Bone contains no water.
A. Right
B. Wrong
A group of patients experienced a near collapse in their self-esteem because______.
A. they were master-of-the-universe guys
B. they were not successful and accomplished without financial status
C. they didn't have clinical depression
D. they didn't feel confident about themselves without financial status
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