She ought to stop . She has a headache because she too long.
A:to work; was reading
B:to work; has read
C:working; has read
找反义词。
接受____ 凶恶____
矮____ 买____
(Ⅰ)若a=1,求不等式f(x)>x+2的解集;
(Ⅱ)若不等式f(x)≤a(x+2)的解集为非空集合,求a的取值范围.
葡萄糖不能发生的反应是( )