子宫腺肌病的特点为()
A.痛经为继发性、进行性
B.子宫呈均匀性增大
C.手术时可沿假包膜剥除腺肌瘤
D.可无任何临床症状
E.孕激素治疗有效
参考答案:A, B, D
—How much is too much for a schoolbag?
—Experts say students should carry_______ more than 10 or 15 percent of their body weight.
A.no
B.not
C.any
D.far
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