- 問題詳情:在下列四個核反應方程中,符號“X”表示中子的是( ) A.A+n→Mg+X B.Na→Mg+X C.Be+He→C+X D.U→Np+X【回答】考點:裂變反應和聚變反應.專題:衰變和半衰期專題.分析:根據電荷數守恆、質量數守恆確定x的電荷數和質量數,從而判斷是否是中子.解答: 解:A、根據電荷數守...
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- 問題詳情:下列哪項最可能不屬於配子()A.Rr B.DE C.Ab D.Be【回答】解:A、R和r是一對等位基因,等位基因在減數第一次*後期隨着同源染*體的分開而分離,一般不會出現在同一個配子中,A正確;B、D和E是非等位基因,可能出現在同一個配子中,B錯誤;C、A和b是非等位基因,可能出現...
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- 問題詳情:如圖,Rt△ACB沿直角邊BC所在直線向右平移到Rt△DEF的位置,則下列結論中,錯誤的是()A.BE=EC B.BC=EF C.AC=DF D.Rt△ABC≌Rt△DEF【回答】 A知識點:全等三角形題型:選擇題...
- 25404
- 問題詳情:選擇下列詞彙完成下面的對話,其中一項為多餘選項。A.disagree B.from C.becauseof D.addition E.agree F.opinion G.who M:Haveyouboughtthings 1 advertisements?W:No,Ihaven’t.Inmy 2 ...
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- 問題詳情:下列哪項最可能不屬於配子( )A.Rr B.DE C.Ab D.Be【回答】A知識點:減數*和受精作用題型:選擇題...
- 32176
- 問題詳情:下列元素的第一電離能最大的是( )A.Be B.C C.N D.O【回答】【*】C【解析】非金屬*越強,第一電離能越大,氧元素的非金屬*最強,但由於氮元素的2p軌道電子處於半充滿狀態,穩定*強,所以第...
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- 問題詳情:下列元素中,電負*最大的是()A.Cs B.O C.Be D.P【回答】B知識點:原子結構題型:選擇題...
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- 1、Tobe,ornottobe–thatisthequestion.2、Contextanddiscourse:Newexplicationof"Tobe,ornottobe...;3、Hamlet:Tobe,ornottobe:thatisthequestion:Wether'tisnoblerinthemindtosuffer,Theslingsandarrowsofoutrageousfortune,Ortotakearmsagainstaseaoftroubles,Andb...
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- 問題詳情:如圖,∠A=∠E,AC⊥BE,AB=EF,BE=10,CF=4,則AC=.【回答】6.【考點】全等三角形的判定與*質.【分析】由AAS*△ABC≌△EFC,得出對應邊相等AC=EC,BC=CF=4,求出EC,即可得出AC的長.【解答】解:∵AC⊥BE,∴∠ACB=∠ECF=90°,在△ABC和△EFC中,,∴△ABC≌△EFC(AAS),∴AC=EC,BC=CF=4,∵EC=BE﹣BC=10﹣4...
- 17784
- 問題詳情:1.(be)ofgoodvalue_____________________.2.bedeterminedtodo…__________________.3.giveupsmoking______________________.4.betiredof___________________________.5.giveaway___________________________.【回答】1.有價值的 2.下定決心 3.戒煙...
- 10320
- Beyourself;beauthentic,bebold,beloving,bebeautiful.Whenyoucannotbegracious,bepolite.I'llbetheredirectly.Mother:Don'tbematerialistic.ShouldIbehappy?Thatwouldbedisrespectful.Youshouldbehappy.Whatibetryingtosaybe,iloveyou.'Benomore'isaeuphemismfor'...
- 5012
- 問題詳情:—Tomisreallycareless! —Be______.He’sa3-year-oldkidafterall.A.secret B.active C.patient D.careful【回答】C知識點:相似相近詞比較題型:選擇題...
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- 問題詳情: Iwaslivingalifeinmyscreenandhardlynoticedwhat61(be)aroundme.Iwasalwayscheckingthetimeandthinkingoffuture62(plan).Mythoughtwas:“Who’sgoingtotextmenow?WhatwillIdonext?”Mybedtimeroutinewasusuallycentered63 onething:myphone.64 Iwenttosleep,Ibr...
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- 問題詳情:_______usedto_______apostofficenearmyhouse.A.There;be BThere;have C.It;be D.There;having【回答】A知識點:簡單句題型:選擇題...
- 17270
- 問題詳情:There will be _______ pollution in the future in the world. r 【回答】A知識點:形容詞比較級題型:選擇題...
- 7735
- 問題詳情:—HappyTeachers’Day!Herearesomeflowersforyou. — beautifulflowerstheyare!Thankyou!A.How B.Howa C.What D.Whata【回答】C 知識點:感歎句題型:選擇題...
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- Iwasallthatthemosthardened,unthinking,wickedcreatureamongourcommonsailorscanbesupposedtobe.Thedilutedpotentialordinarysharesissuedinthecurrentperiodshallbesupposedtobeconvertedonthedateofissuance.ThereforethefuturewayoftheChinesecountrysidecaringfort...
- 25204
- 問題詳情:Whyissettinggoalsimportant?Becausegoalscanhelpyoudo,be,andexperienceeverythingyouwantinlife.Insteadofjustlettinglifehappentoyou,goalsallowyourselfto 1 yourlifehappen.Successfulandhappypeoplehaveavisionof 2 theirlifeshouldbeandthey...
- 15352
- 問題詳情: —I’mafraidoftakingbittermedicine. —Don’tbeafraid!Be________. A.careful B.quiet ...
- 27496
- 問題詳情:Be—youcan’texpectmetofinishallthisworkinsolittletime.A.reasonable B.confidentC.creative D.grateful【回答】A知識點:形容詞題型:選擇題...
- 20490
- 問題詳情: ThecapitaloftheUnitedStates61. (be)calledWashington,D.C.Itwasnamed Washingtoninhonorof62._____firstpresidentoftheUnitedStates,GeorgeWashington.D.C.standsfor"DistrictofColumbia".Its63. _(create)startedin1790.Itwasbuiltalongarive...
- 26501
- 問題詳情:______youafraidof_______lateforschool? A.Do;be B.Are;be C.Do;being D.Are;being 【回答】D 知識點:動詞時態題型:選擇題...
- 19968
- Meetmeintheusualplacetomorrowmorning,bethereorbesquare.There'sahugepartyonFridaynight;bethereorbesquare....
- 9665
- 問題詳情: isimportant carefulwithfire.A.That;be B.It;to C.It;tobe D.That;tobe【回答】C 這裏考查動詞不定式作主語,用it作形式主語,真正主語動詞不定式放在後面。句意:當心火災是...
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- Daretobedifferent.Bewillingtobedifferent.Theoriginofdifferentspectralstarsmustbedifferent.Ticketpriceswillbedifferentpricesindifferenttime.Thethreetasksmaybedifferentindifferentversions,Howcanthetwowinnersbedifferent?Thistimemayjustbedifferent.Itcoul...
- 19016