726÷6=____     702÷9=____

①a＞0   ②2a+b=0  ③a+b+c＞0  ④当﹣1＜x＜3时，y＞0

其中正确的个数为（   ）

（1）Swallows fly back to the ____ part of the country in winter every year.(南方)
（2）The space sleeping bag is fixed to the walls to prevent ____ .（飘浮）
（3）I am not sure whether the watches are those ____ .(绅士）
（4）You will get much____ if you give up eating fast food.(苗条)
（5）It is said that this kind of the car is____ designed for her.(特别的)
（6）In winter you’d better keep____  warm enough to stay healthy.(you)
（7）We____  could not believe our ears when we heard the surprising news.(simple)
（8）The water in the river is ____ . You can drink it without cooking.(harm)
（9）Works of MoYan is very popular among Chinese____  .(read)
（10）My daughter hopes to go abroad for ____ (far) study next year.