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1. A. load B. monkey C. home D. most
2. A. develops B. cars C. meets D. books
3. A. walks B. kisses C. dances D. boxes
4. A. honest B. hour C. honour D. humour
5. A. Internet B. ready C. every D. teeth
6. A. tenth B. math C. brother D. theater
7. A. pyramid B. Sydney C. dry D. hungry
8. A. energy B. electricity C. effect D. environment
9. A. pollution B. solar C. symbol D. reason
10. A. cow B. now C. country D. about
II. Choose the word whose underlined part is pronounced differently from the others . 1.A.bicycle B. exciting C. favorite D. widely
2.A. doctor B. opening C. gold D. poscard
3. A. farther B. earth C. both D. marathon
4.A. fear B. repeat C. idea D. really
5.A.hair B. fare C. prepare D. speaker
III. Choose the word whose underlined part is pronounced differently from the others. 1. A. arrived B. watched C. listened D. played
2. A. arrived B. watched C. stopped D. washed
3.A. they B. month C. father D. brother
4.A. ago B. open C. cold D. come
5. A. married B. called C. played D. rented
6. A. started B. worked C. waited D. wanted
IV. Choose the word whose underlined part is pronounced differently from the others 1. A. needed B. liked C. washed D. hoped
2. A. works B. plays C. wants D. stops
3. A. stayed B. listened C. cooked D. played
4.A. brother B. open C. some D. come
5. A. wanted B. excited C. needed D. bored
Phonetics: Choose the word whose underlined part is pronounced differently:
1. A. tooth B. clothing C. bath D. both
2. A. gather B. monthly C. father D. brother
3. A. though B. thank C. through D. thin
4. A. clip B. give C. twice D. stupid
5. A. studio B. documentary C. cute D. stupid
a)\(Fe+CuSO4-->Cu+FeSO4\)
b) \(n_{Fe}=\frac{1,96}{56}=0,035\left(mol\right)\)
\(m_{CuSO4}=\frac{100.10}{100}=10\left(g\right)\)
\(n_{CuSO4}=\frac{10}{160}=0,0625\left(mol\right)\)
Do \(0,036>0,0625\Leftrightarrow\) \(n_{Fe}< n_{CuSO4}\)
=> CuSO4 dư.Tính theo n chất hết (Fe)
Chất rắn B là Cu
\(n_{Cu}=n_{Fe}=0,035\left(mol\right)\)
\(m_{Cu}=0,035.64=2,24\left(g\right)\)
c) m dd A =\(m_{Fe}+m_{ddCuSO4}-m_{Cu}=1,96+100-2,24=99,72\left(g\right)\)
dd A là FeSO4 và CuSO4 dư
\(n_{FeSO4}=n_{Fe}=0,035\left(mol\right)\)
\(m_{FeSO4}=0,035.152=5,32\left(g\right)\)
\(C\%_{FeSO4}=\frac{5,32}{99,72}.100\%=5,33\%\)
\(n_{CuSO4}=n_{Fe}=0,035\left(mol\right)\)
\(n_{CuSO4}dư=0,0625-0,035=0,0275\left(mol\right)\)
\(m_{CuSO4}dư=0,0275.160=4,4\left(g\right)\)
\(C\%_{CuSO4}dư=\frac{4,4}{99,72}.100\%=4,41\%\)
1. A. there B. theatre C. earth D. anything
2. A. anything B. them C. neither D. weather
3. A. think B. than C. Thursday D. third
4. A. father B. they C. the D. thick (thick chứ sao lại thich nhỉ?)
5. A. than B. thin C. through D. month
I. Choose the word whose underlined part is pronounced di¤erently.
1. A. book B. foot C. poor D. look
2. A. tale B. hang C. land D. hand
3. A. dangerous B. travel C. man D. traffic
4. A. comb B. climb C. suburb D. bomb
5. A. diverse B. island C. scissors D. right
6. a. tennis b. soccer c. tent d. never
7. a. fly b. hungry c. usually d. early
8. a. game b. table c. late d. water
9. a. photo b. go c. home d. hot
10. a. uncle b. music c. minibus d. summer
11. a. beach b. season c. weather d. read
12. a. flower b. town c. slow d. now
13. a. ride b. discipline c. drive d. Motorbike
15. a. nose b. color c. mother d. Monday
15. a. round b. house c. shoulder d. mouth
II. Choose the word different from the other wwords in each line.
1. A. island B. mountain C. wonderful D building
2, A. long B. deep C. bay D. high
3. A. rock B. waterfall C. river D. lake
4. A. watch B. see C. enjoy D look
5. A. must B.have C. should D can
Choose the word whose underlined part is pronounced differently
1. a,load b,money c,home d,most
2. a,coat b, up c,cut d,bun
3. a,coat b,pole c,mother d,boat
4. a,dump b,road c,stump d,cup
5. a,brother b,cold c,though d,comb
1. B
2.A
3. C
4.B