写出四句描写四季的古诗。
_____________________________________
竹外桃花三两枝,春江水暖鸭先知。蒌蒿满地芦芽短,正是河豚欲上时。 (答案不唯一)
We have been told that under no circumstance ______ the telephone in the office for personal affairs.
A.may we use
B.we may use
C.we would use
D.did we use
患者,男,30岁,低热盗汗1年,间断脐周隐痛。体检:腹部无压痛,未触及肿块,移动性浊音阳性。肝脾肋缘下未触及。为明确腹水性质,最有价值的检查是
A.PPD试验
B.抽取腹水检查
C.CT
D.X线检查