别人问你:“What do you do on Saturdays?” 你应该回答: A. I like Saturdays. B. It’s Saturday today.C. I play computer games and read books on Saturdays.
已知、互为相反数,、互为倒数,等于4的2次方,则式子的值为()
解方程时,去分母正确的是().
若是一元一次方程,则等于().
若,,则的值有()
代数式中:0,,,,,,中,单项式的个数是P,多项式的个数是q,则p+q为 ()