题目内容

Efforts to prevent osteoporosis include _____.

A. adequate intake of calcium
B. engaging in weight-bearing exercise
C. estrogen replacement therapy
D. intake of vitamin D

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_____ may lead to osteomalacia.

A. deficiency of vitamin D
B. renal disorders
C. certain intestinal disorders
D. liver disease

The symptoms of Paget's disease are _____.

A. pain
B. fracture
C. hearing loss
D. scar formation

Malignant tumors like _____ most commonly metastasize to lungs.

A. osteosarcoma
B. chondrosarcoma
C. hysteromyoma
D. sarcoma

Signs of bone tumors are _____

A. easy fracture
B. pain
C. increase in serum calcium and alkaline phosphatase
D. bleeding