广义的体育舞蹈是指竞技性的国际标准舞和泛指用来健身、健美的舞蹈。狭义的体育舞蹈专指用来健身、健美的舞蹈。
参考答案：错
—Where is Tom ?
—Well , he you here . Otherwise he would come down right now .
A．didn’t know ; were
B．hasn’t known ; are
C．doesn’t know ; are
D．hadn’t known ; were
4÷11的商用循环小数简写表示是______，把它保留三位小数约是______．
