单项选择题

初等数学的第一个黄金时代是()

A.古希腊数学时代
B.古巴比伦数学时代
C.古埃及数学时代
D.古代中国数学时代

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急救的原则有：()

A.先重后轻
B.先止后包
C.先复后固
D.先送后救

According to the last paragraph, some researchers reckon that______.
A．female autists are better disguisers
B．women's brains are more vulnerable
C．there are actually less female autists
D．girls are better at hiding their feelings

A.
A．female
B.women's
C.there
D.girls