In Melbourne’s Lort Smith Animal Hospital in 2009, Monti was adopted by Mum .The 36 she shared with him was unbelievably strong. Monti took away a lot of 37 for Mum and really mad
Spending a long time in front of the computer may cause headaches, eyestrain（眼睛疲劳）or other physical problems. Make sure that your child spends only one or two hours a day in front of a com
Between their crazy schedules and upside-down circadian（昼夜节律的） rhythms, teens have always been somewhat sleep-deprived（剥夺）．Now technology is making it worse．
，则cos(2θ－15°)＝________．
