What colour is your schoolbag?[ ]
A. My schoolbag is heavy.
B. My schoolbag is green.
答案:B
已知等差数列{an}的前10项和S10=-40,a5=-3.
(Ⅰ)求数列{an}的通项公式;
(Ⅱ)设bn=an+2an(n∈N*),求数列{bn}的前n项和Tn.
既能化火,又能遏伤阳气的温邪是()
A.湿热
B.温毒
C.风热
D.燥热