31/2化成小数是3.05。()

在Ⅱ栏中选出与Ⅰ栏中相应的答语。

ⅠⅡ

()1.What'syourtelephonenumber,please?A.Heisaworker.

()2.It'sverycoldtoday,isn'tit?B.Itdoesn'tmatter.

()3.Canyoumendit?C.Yes,wonderful,thanks.

()4.Howisyourmother?D.Sometimes.

()5.Hi,thisismyfriend,Lily.E.Mytelephonenumberis6262383.

()6.I'msorrytotroubleyou.F.Yes,itis.Youneedtowearwarmclothes.

()7.Howoftendoyougotothepark?G.Certainly.

()8.Excuseme.Whereisthepostoffice?H.Nicetomeetyou.

()9.Whatdoesyourfatherdo?I.SheisOK.

()10.Didyouhaveagoodtrip?J.It'sabouttwentymetersfromhere.

下列变化，一定发生了化学变化的是()

最简分数的分子和分母只有公因数1。()

18和24的最大公因数是________，3和5的最小公倍数是________.