6. A. distribute B. tribe C. trial D. triangle
7. A. decent B. present C. absent D. recent
8. A. disease B. excursion C. divisible D. design
9. A. courageous B. southern C. flourish D. nourish
10. A. naked B. walked C. scared D. needed
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III. Choose the word whose stress is different from the others.
1. A around B. parking C. railway D. driver
2. A. tricycle B. indicate C. illegal D. accident
3. A. motorbike B. suggestion C. vehicle D. buffalo
4. A. triangle B. helicopter C. dangerously D. prohibition
5. A. obey B. marble C. helmet D. licence
6. A. respect B. mistake C. bumpy D. reverse
7. A. dangerous B. yesterday C. corridor D. suggestion
8. A. pavement B. safety C. regular D. transportation
I. Choose the word that has stress on the second syllable. (2,5pts)
1.A. skillful B. again C. entertainment D. teenager
2. A. amount B. lemonade C. absent D. measure
3. A. normal B. office C. explore D. temperature
4. A. different B. disease C. engineer D. capital
5. A. modern B. children C. energy D. improve
6. A. viewer B. stadium C. appointment D. vessel
7. A. chopstick B. teenager C. athletics D. modern
8. A. moderate B. simple C. invite D. doctor
9. A. hospital B. lifestyle C. vegetables D. important
10. A. competition B. selection C. measure D. oceanic
a)
Xét \(\Delta AOD\) và \(\Delta COB\) có: \(\left\{{}\begin{matrix}OA=OC\left(gt\right)\\\widehat{O}:chung\\OB=OD\left(gt\right)\end{matrix}\right.\)
\(\Rightarrow\Delta AOD=\Delta COB\left(c.g.c\right)\)
\(\Rightarrow AD=BC\left(\text{2 cạnh tương ứng}\right)\left(\text{đpcm}\right)\)
b)
Nối A với C
Ta có: \(\left\{{}\begin{matrix}OA=OC\\OB=OD\end{matrix}\right.\left(gt\right)\Rightarrow OA-OB=OC-OD\)
Hay \(AB=CD\)
Xét \(\Delta ABC\) và \(\Delta CDA\) có: \(\left\{{}\begin{matrix}AB=CD\left(cmt\right)\\AC:chung\\AD=BC\left(cmt\right)\end{matrix}\right.\)
\(\Rightarrow\Delta ABC=\Delta DCA\left(c.c.c\right)\)
\(\Rightarrow\widehat{ABC}=\widehat{CDA}\left(\text{2 góc tương ứng}\right)\)
Vì \(\Delta AOD=\Delta COB\left(cmt\right)\Rightarrow\widehat{A}=\widehat{C}\left(\text{2 góc tương ứng}\right)\)
Xét \(\Delta ABE\) và \(\Delta CDE\) có: \(\left\{{}\begin{matrix}\widehat{ABC}=\widehat{CDA}\left(cmt\right)\\AB=CD\left(cmt\right)\\\widehat{A}=\widehat{C}\left(cmt\right)\end{matrix}\right.\)
\(\Rightarrow\Delta ABE=\Delta CDE\left(g.c.g\right)\left(\text{đpcm}\right)\)
c) Vì \(\Delta ABE=\Delta CDE\left(cmt\right)\Rightarrow AE=CE\left(\text{2 cạnh tương ứng}\right)\)
Xét \(\Delta AOE\) và \(\Delta COE\) có: \(\left\{{}\begin{matrix}OA=OC\left(gt\right)\\\widehat{A}=\widehat{C}\left(cmt\right)\\AE=CE\left(cmt\right)\end{matrix}\right.\)
\(\Rightarrow\Delta AOE=\Delta COE\left(c.g.c\right)\\ \Rightarrow\widehat{AOE}=\widehat{COE}\left(\text{2 góc tương ứng}\right)\)
`=> OE` là phân giác của \(\widehat{xOy}\) (đpcm)
1. A. better. B. prefer. C. teacher. D. worker
2. A. near B. hear. C. dear. D. bear
3. A. concert. B. concern. C. collect. D. combine
4. A. picture. B. culture. C. Neighbour. D. tourist
5. A. depemdent. B. enjoy. C. absent. D. givernment
6. A. future. B. Return. C. picture. D. culture
7. A. first. B. girl. C. bird. D. sister
8. A. burn. B. sun. C. hurt. D. turn
9. A. nurse. B. surf. C. picture. D. return
10. A. hot. B. hour. C. hotel. D. hobby
sorry, mk lỡ tay gửi trả lời
1. A. better. B. prefer. C. teacher. D. worker
4. A. picture. B. culture. C. Neighbour. D. tourist
5. A. depemdent. B. enjoy. C. absent. D. givernment
6. A. future. B. Return. C. picture. D. culture
7. A. first. B. girl. C. bird. D. sister
8. A. burn. B. sun. C. hurt. D. turn
9. A. nurse. B. surf. C. picture. D. return
10. A. hot. B. hour. C. hotel. D. hobby
I Find the word which has a different sound in the underlined part.