The problem is so ______________ that I can solve it ________________.
A:easy, easy
B:easy, easily
C:easily, easy
D:easily, easily
读课文《大自然的启示》选一选
A飞机 B地方 C命令 D惨祸 E超过
① 异想天开的____ ②机毁人亡的____ ③轻而易举地____
④动物栖息的____ ⑤性能优良的____
(Ⅰ)求f(x)的解析式;
(Ⅱ)已知f( a2 + π12 )= 1013 ,﹣ π2 <a<0,求cos(a﹣ 3π4 )的值.