下列關(guān)于進(jìn)程的敘述中，正確的是
A、當(dāng)進(jìn)程從運(yùn)行態(tài)轉(zhuǎn)換到就緒態(tài)時(shí)，處理機(jī)的現(xiàn)場(chǎng)信息必須保存在進(jìn)程控制塊中A
當(dāng)進(jìn)程從運(yùn)行態(tài)轉(zhuǎn)換到就緒態(tài)時(shí)，處理機(jī)的現(xiàn)場(chǎng)信息必須保存在進(jìn)程控制塊中;操作系統(tǒng)的重要概念是進(jìn)程，不同的進(jìn)程執(zhí)行的代碼可能相同;進(jìn)程存在的標(biāo)志是進(jìn)程控制塊， 與本進(jìn)程相關(guān)的運(yùn)行狀態(tài)只能操作系統(tǒng)讀取;當(dāng)進(jìn)程申請(qǐng)?zhí)幚頇C(jī)而得不到滿足時(shí)，它將進(jìn)入就緒態(tài)
()What'sthat____English?
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.
已知阿伏伽德羅常數(shù)是NA，銅的摩爾質(zhì)量為M，銅的密度是ρ，那么以下說(shuō)法正確的是()
Thenumberofsecondsinoneday_____Thenumberofminutesinoneweek
Theboysaresittingunderthetree.(對(duì)劃線部分提問(wèn))
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