①如果戊吃了蛋炒饭,那么甲吃了羊肉泡馍;
②只有甲不吃羊肉泡馍,丙才吃了蛋炒饭;
③或者丁吃牛肉面,或者丙吃蛋炒饭;
④戊吃蛋炒饭,或者乙不吃河州包子。
下列哪项为真,可以推出丁吃到了牛肉面( )
A.甲没有吃到羊肉泡馍 | B.乙吃到了河州包子 |
C.丙吃到了蛋炒饭 | D.戊没有吃到牛肉面 |

同类型试题

y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2


y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2

