High-quality gelatin is obtained ______ the bone and porn skin.
A: in
B: from
C: into
D: out of
A: in
B: from
C: into
D: out of
举一反三
- 中国大学MOOC: From daylight, our bodies absorb vitamin D through the skin. Certain skin diseases also （2） from exposure to sunlight.
- We ______________ in distributing high quality wines. A: sell B: bring out C: handle D: specialize
- ________To do a skin test, a doctor puts venom under the skin.
- Which of the following sequences shows the proper ranking of foods from low to high protein quality ?
- The wrong statement about the ultrasonic manifestations of gout is ( ) A: high sensitivity to synovial crystallization B: tophi stone has high specificity C: high specificity of bone erosion D: low sensitivity to bone erosion