13,9,31,71,173,( )
A.235
B.315
C.367
D.417
参考答案:D
解析: c=a+2b
肝硬化大量腹腔积液,呼吸困难,用利尿剂后仍尿少,如需放腹腔积液,第一次放多少合适()
A.1000ml
B.1500~2000ml
C.2500~3500ml
D.6000~8000ml
E.<500ml
The little girl often has nothing for breakfast, ________she?
-_______. Because she often gets up late and is afraid of being late for school.
A.has; Yes
B.doesn't; No
C.does; No
D.hasn't; Yes