简答题 国际货币体系的作用有哪些？

A. They became familiar in every household.
B. They gained more fame than before.
C. They earned more money than before.
D. They became familiar to TV programs.

A. When your child occasionally complains about a physical discomfort like headache.
B. When the symptoms interfere with your child’s ability to function at home or in school.
C. When your child grieves over a loss for days at a time.
D. When your child exhibits all the symptoms of depression.

A. The child talks too much in class.
B. The child has trouble getting along with other kids.
C. The child’s performance in school is poor.
D. The child becomes angry easily.