甘露醇是()
A.非甾类抗炎药
B.平喘药
C.解痉药
D.脱水药
E.祛痰药
参考答案:D
. It is reported that the ____________ winds last night buried the whole village in sand.
A.gentle
B.distant
C.violent
D.slight
已知等差数列{an}的前n项和为Sn,且a4=10,S4=22.
(1)求数列{an}的通项公式;
(2)设bn=2an,求数列{bn}的前n项和Tn.