题目内容

为明确阴道出血的原因和性质，首选的诊断方法为

A. 阴道彩色多普勒B超
B. CT
C. MRI
D. CA125
E. 分段诊刮

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A．The craftsmanship in toy making has remained essentially unchanged.B．Toys have remain

A. The craftsmanship in toy making has remained essentially unchanged.
B. Toys have remained basically the same all through the centuries.
C. The toy industry has witnessed great leaps in technology in recent years.
D. Toys are playing an increasingly important role in shaping a child's character.

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