宫颈癌的主要转移途径是()
A.直接蔓延
B.淋巴转移
C.血行转移
D.直接蔓延和种植
E.直接蔓延和淋巴转移
参考答案:A
反常呼吸见于()。
A.单纯肋骨骨折
B.多根多处肋骨骨折,胸廓软化内陷
C.胸壁挫伤
D.闭合性气胸
E.张力性气胸
Without proper lessons, you could _____ a lot of bad habits when playing the piano. [ ]
A. give up
B. catch up
C. keep up
D. pick up