单项选择题
从肉眼可以判断出果蝇的性别,雄果蝇个体比雌果蝇大,背部有明显粗黑条纹。
A、正确
B、错误
从肉眼可以判断出果蝇的性别,雄果蝇个体比雌果蝇大,背部有明显粗黑条纹。
A、正确
B、错误
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多项选择题
If blood stagnation affects the heart, what kind of symptoms usually may be found? ( )
If blood stagnation affects the heart, what kind of symptoms usually may be found? ( )
A. Mental disturbances such as delirious raving
B. Chest pain
C. Suffocation
D. Insomnia