Which of the following means surgical repair of bone? A: osteomalacia B: orthopedics C: osteoporosis D: osteoplasty

硫胺素（维生素B1）缺乏会导致 A: pellagra B: osteomalacia C: scurvy D: beriberi

Serum calcium decrease was not found<br/>in: A: Acute bone atrophy B: Infant tetany C: Osteomalacia D: Hypoproteinemia E: Chronic nephritis

Softening of the bones caused by a deficiency of vitamin D, either from a poor diet or lack of sunshine or both is ________. A: osteoblast B: osteomalacia C: chondromalacia D: chondrogenesis

Common nutritional problems for infants and young children include? A: iron deficiency anemia B: Growth retardation caused by zinc deficiency C: deficiency caused by vitamin D rickets D: Osteomalacia caused by calcium deficiency