How many Southerners died in the Civil War?
A. Over 500, 000.
B. Over 600, 000.
C. Almost 300, 000.
D. 50,500.
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Why was slave labor so important to the Southern economy?
A. Southerners were not used to working.
B. Workers were needed for large-scale farming.
C. Workers were needed for the many factories.
D. Slave labor freed the upper class to work at their white collar jobs.
贫血时病人皮肤及粘膜苍白,较为可靠的检查部位是
A. 面颊皮肤及上腭粘膜
B. 手背皮肤
C. 耳廓皮肤
D. 颈部皮肤及舌面
E. 睑结膜及口唇
慢性再生障碍性贫血病人首发的表现是
A. 贫血
B. 皮肤黏膜出血
C. 子宫出血
D. 呼吸道感染
E. 脑出血
重型再生障碍性贫血病人死亡的主要原因是
A. 皮肤黏膜出血
B. 脑出血和严重感染
C. 败血症
D. 皮肤感染
E. 肺部感染