wéi chí
jīng zhàn
shǔ yú
huǎn huǎn shǐ guò
____
(Ⅰ)若p∧q为真,求a的范围.
(Ⅱ)若p∨q为真,求a的范围.
夏天吹电风扇人感到凉爽,达是因为( )
The doctor says that you will end up in hospital _________ you go on smoking like that.