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Đề thi khảo sát chất lượng Học sinh giỏi TP Vinh năm 2012 - 2013 - Lớp 8


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- Bii 3: Q di)m).
- Tr€n rnot vE tia Ax sao cho CA.
- Chuns minh: AI(.BA - BK.AI..
- Ggi d ld dudng thing di qua A kh6ng c6t c4nh BC.
- X6c dinh vitri di6m M tr€n dudng thing d sao cho chu vi AMBC nh6 nhdt..
- Bii 5: (2 di€m).
- nria mat phing b0 AC chu'a di€m B xung vcyi C qua Ax.
- PHONG GIAO DUC VA DAO TAO VINH.
- on xHAo sAr cnAr LTIqNG Hec srNH Gror.
- \4U_HQq2qlx - 2013 Bt rnr cniivn rHrlc Mdn thi: H6a hgc l6p 8 Thdi gian ldm bdi: 120 phfit Ciu 1: (3 diCm) Cdn bdng c6c ph6n img h6a hoc sau:.
- Cdu 2: (a di6m) oOt ch6y ph6t pho trong kh6ng khi thu dugc ch6t rln A, hda tan A vdo nu6c du thu dugc dung dfch B.
- Cho kim lopi natri du vdo dung dfch B thu duoc dung dich c vd khi D.
- DAn khf D di qua h5n hgp bQt E g6m Al2o3, Fe3oa, cuo nung n6ng thu.
- dugc h6n hqp kim loai F.
- ViCt c6c phucrng trinh h6a hgc xity ravi cho bi6t A, B, C, D, F ld nhfrng chdt gi?.
- Cffu 3: (a di6m) Cho cdc kim lopi: K, Al, Fe vd dung dich HCI:.
- NOu lAy cung m6t kh6i lugng kim lopi trdn cho t5c dqng htit vdi dung dich HCI thi kim lopi ndo cho nhi6u khf hiclro ntrdtZ.
- N6u thu dugc cirng mQt thd tfch khi hidro thi kh6i lugng kim loai ndo dtng itnhSt?.
- DOt h6n hqp X voi 64 gam khi oxi.
- Sau khi phAn fmg xtry rahohn toin thu dugc hdn hqp khf Y..
- Viet phucrng trinh hoa hgc xhy ra..
- Cdu 5: (a di6m) H5n hqp khi A g6tn u mol SOz vd 5a mol kh6ng khf.
- Nung n6ng h6n hqp A v6i V2O5 xirc t6c thu dugc h5n hqp khf B.
- Hdy tinh hi6u su6t phin img tr6n v6i gi6 thit5t kh6ng khi c6 chira 80% th€ tich ld N2 vit20%o th6 tfch ia Or..
- PHONG GIAO DUC VA EAO TAO THANH PHO VINH.
- 1.,0 tcn cic niri\ cLii cich va n€r-r noi dung chinh, f nghia cLra cac ciO.
- t i o DUc vA DAo TAo ' r ' r r A N r r p i r o vrNrr sAr cnAr LU'oNCl rroc srNr{ c;lol xAru Hec zo12 - 2ot3.
- Iir.p 8 Tlrdi gian larn bni: t 20 phfit.
- N€, vai tro cria h0 ti€u h6a, hg ho hep va h6 bai giira co thO voi rndi tn-rcrng.
- t.i-1, tltatt cr-ra An hodc Cucrng chuy6n cho Binh thi khong xAy ra tai bien Li;.
- rtrau c-ua Cluong chuy6n cho An hodc lAy m6u cua Dfrng r'nuyOn cho Cu'o',-rg thi xaiy ra tai bi0n.
- Srin phirn ti€t cira l .
- vai tro cua no.
- Lfir, .iir.r,liy iii'iiin' r ' i.
- l-hi sinh l<iern s0 trang tnt6'c l<hi ll\rn bai..
- I)oc kiyOu cliu trr-ro'c l<hi liirl ba\i.
- l<hong cling birt tiv tring..
- I ( l i i r n thi coi thi l<hong g i a i th i o h g i t h e m.
- Bii thi rrrdn: TIENG ANH LOI'} 8 Thdi gian lam bdi I20 phrir.
- There is one e-ttro senlence which you do not need to use.
- Well, it's the first tinre it has happened to mc!.
- I'hitns GD&D7'thdnlt pho [/inh - KSCL HSG l6p B ndnt hpc 20]2-2013 Irage 1 ol-4.
- l1'),ou think that aspirin is good fbr only headache.
- rliscovcrccl that aspirin can also reducc the risk ofhean attacl(.
- colotl canocr, stltne kintls ,rl slr.okcs and high blood pressure in pregnant wollen.
- Should ever,r'one takc aspirin'?.
- .,\spirin is salt lilr those rvho suffer from a headache or other mild aches and pains.
- If you takc aspirin fcrr a long titttc.
- rtttt u ill have stomach pains and hearing problems.
- Even though doctors believe thal aspit'itr cnrl cure illlesses such as heart disease, they will encourage people to eat a hr:althl' dicl.
- and not to smoke.
- Aspirin cannol take the place o1-these good healthv dicts.
- doing cxcrcise and not srnoking..
- Can be used til Il.
- Can be usecl to C.
- Can bc used to.
- Can be used to c r a n L r c r .
- treat only headache.
- treat only headache and stomachache treat only headache and heart attacl<.
- treat only headache, to reduce the risk of heart attttcl<, ctllot-t blood pressure..
- as nruch as you u,ould like because it has no bad effects Ll.
- to crlre illnesses such as hearl disease.
- C as much as you rvould like when your ilh-ress is serious.
- rvithout prescription only when,vou suffer rnild aches and pains [1'\'or-r take aspirin for a long titne,.
- vou rvill have stomach pains and hearing problerns..
- u,ill be all right...
- ),tttt u,ill be prevented from heart attack..
- to take aspirin as tnuch as possible.
- to'do exercise, to have a healthy diet and not to suroke, Cl.
- to do erercise is not necessary..
- to take aspirin and smoke..
- can be used for every illness..
- has no undesired eff-ects..
- cannot take the place of doing exercise, having a healthl' diet aud uot snrol<ing..
- can take the place of doing exercise, having a healthy diet and not stnol<ing..
- rvhile cleaning in the liouse..
- l'lritrrg GD&DT thanh pho l/inh - KSCL HSG /d'p B niint hrzc 2012-2013 Page 2 ot- 4.
- I'.rrch ol'you a share irr the work..
- I arn usecl to.
- so that R.
- Cl.'I'hat's very nice.
- .In euclt of the lines (from I to I0) in the fbllowitlg puro{:ruph, there is OIYE unnecessary word.
- They were been quite surprised.
- I didn't think 2 but they u,cluld object because they both had dogs when they were young.
- irnrnediately began to telling me of a1l the responsibiiities I would 4 have them.
- i have to be fed, taken fbr a long walks everyday and regular visits to the vet.
- After our talk, I realized that I hadn't thought as scriously 9 cnough about it the situation and that I would have to rethink the idea.
- Irr the past, any mother would be proud if her children were rouncl and slightll' fat..
- CONCI.UDII) too much fat and sugar in children's diets are a major factor in the (3 DllVEl,Ol').
- I i ) children need to ea| a rvide ranqe of foods and their seneral hcalth could bc (6.
- (t sor.vh,) is not to change eating habits too fast, but to do it (8.
- so that children do not lose muscle in addition to 1at.
- to take part in sports this tt/a)'.
- Phing GD&DT'thdnh phi Vinh - KSCL HSG lop B ndnt hoc 2012-2013 Page 3 of .t