下列小数化成分数正确的是()

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.

JackisateacherofEnglish.Heisnotyoung，butheisnotold.Hehasaroundfaceandblackhair.Heistall.Therearefiftystudentsinhisclass.Theyalllikehim.Nowit'sintheafternoon.Look，somestudentsareworkingintheclassroom.Jackisthere，too.HeishelpingthemtostudyEnglish.Heisagoodteacher，andheisagoodfriendofthemall.

()1.WhatdoesJackdo?

A.Heisaworker.

B.Heisateacher.

C.Heisadoctor.

D.He'sanurse.

()2.Whatcolourishishair?

A.It'sblack.

B.Hisheiriswhite.

C.Itisbrown.

D.Hehasyellowhair.

()3.Howmanystudentsarethereinhisclass?

A.Therearefifteenstudentsinhisclass.

B.There'sfifty.

C.Hehasfifty.

D.There'refiftyinit.

()4.Jackisagoodteacher，isn'the?

A.Yes，heisn't.

B.No，heis.

C.Yes，he's.

D.Yes，heis.

()5.Whatarethestudentsdoingintheclassroom?

A.Theyarewalkingthere.

B.Theyaredoingtheirlessons.

C.Theyarehelpingtheirteacher.

__________，身世浮沉雨打萍。(文天祥《过零丁洋》)

下列物质的转化(“→”表示一种物质转化为另一种物质)中，每次转化只通过一步反应，不可能全部实现的是()