食管裂孔疝（）。
A.腹块、便血、腹痛
B.腹痛、便血、呕血
C.腹胀、便血、呕吐
D.无痛性便血
E.腹痛、脓血便
参考答案：B
在一局中对第一次延误比赛犯规的判处是（）
A、对教练警告
B、对该队警告
C、立即判罚该队
A 9-month-old, well-nourished boy who lives with his extensive extended family tests positive for tuberculosis. Which of the following is a risk factor for tuberculosis in this client
A．Male sex.
B．The infant is in the 95th percentile for height and weight.
C．His mother did not receive prenatal care until the second trimester of her pregnancy.
D．Age.
