Polymyositis is inflammation of many:
A.sense organs
B.muscles
C.glands
D.bones
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The bone of the thigh is the:
A.patella
B.umbilicus
C.cranium
D.femur
Chondrosarcoma is a tumor that originates in:
A.adipose tissue
B.bone
C.cartilage
D.muscle
The frontier experience began in about 1890 and is still continuing in the American West today.
A. 对
B. 错
One reason why many Americans people are still fascinated by the frontier period is that it represents a time when the traditional basic American values were expressed in their purest form.
A. 对
B. 错