sửa lại câu
Traffic at the freeway this morning was moving slowly
A B C D
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1.The green shoes aren't quite as expensive as the red ones.
2.Grant seems to be nothing as committed as Richard is to the project.
3.The more you argue about it, the later we'll get to Denver.
4.Your mp3 player was half as expensive as mine.
5.Wales is nowhere near as big as England.
6.The bigger cities, the higher the crime rates.
7.The second album was nowhere near as successful as their first.
\(A=\frac{n-2}{n+3}\)
a) Để A là phân số khi n+3 khác 0 ( n thuộc Z)
vậy n khác -3 ( n thuộc Z ) thì A là phân số
b) Để A nguyên khi n-2 chia hết cho n+3
mà n+3 chia hết cho n+3
suy ra n+3-(n-2) chia hết cho n+3
suy ra 5 chia hết cho n+3
n +3 \(\in\left\{1;-1;5;-5\right\}\)
n \(\in\left\{-2;-4;2;-8\right\}\)
Thử lại
n | -2 | -4 | 2 | -8 |
A=\(\frac{n-2}{n+3}\) | -4 | -6 | 0 | 2 |
TM | TM | TM | TM |
\(B=\frac{10n-3}{4n-10}=\frac{\left(4n-10\right).\frac{5}{2}+22}{4n-10}\)
\(B=\frac{5}{2}+\frac{22}{4n-10}\Rightarrow B=\frac{5}{2}+\frac{11}{2n-5}\)
ĐỂ B đạt GTLN khi \(\frac{11}{2n-5}\)đạt GTLN, điều này xảy ra khi 2n - 5 là số nguyên dương nhỏ nhất,
tức là 2n-5=1 suy ra 2n=6 suy ra n=3
Khi đó \(B=\frac{10.3-3}{4.3-10}=\frac{27}{2}\)
Vậy B có GTLN là 27/2 khi n
I. 1. C
2. C
3. B
4. C
5. A
6. C
7. B
8. A
9. A
10. D
11. C
12. C
13. C
14. C
II. 1. B frightening----> frightened
2. C. were took-----> were taken
3. A. helped------> are helped
4. B. composing-------> composed
5. D. announcing-------> announced
6. A. been------> \(\varnothing\)
7. C. has------> has been
8. C. accompany-----> accompanied
LÀM CỰC LẮM LUÔN NÊN NHỚ K ĐÚNG CHO MÌNH VỚI NHA! CHÚC BẠN HỌC TỐT!
1. / he/ beans/ Does/?
__________________Does he beans ?_______________________________________________________
2. color/ What/ eraser/ your/ is/?
______________________What color is your eraser ?____________________________________________________________
3. feels/ She/ thirsty/ now/.
______________________She feels thirsty now.____________________________________________________________
4. you/ feel/ Do/ hungry/.
______________________Do you feel hungry ?____________________________________________________________
5. Lan's/ drink/ is/ apple juice/ favorite/.
_______Lan's favorite drink is apple juice.___________________________________________________________
6. for/ what/ there/ lunch/ is/ ?
_________What is there for lunch?_________________________________________________________________________
Hok tốt !
1.Does he beans?
2.What color is your eraser?
3.She feels thirsty now.
4.Do you feel hungry?
5.Lan's favorite drink is apple juice.
6.What is there for lunch?
Hok tốt!
1,If the soil is polluted, plants will not grow well.
2,What an expensive car!
3,If you work hard, you will pass the exam.(Câu này mình nghĩ là work chứ không phải world)
4,In the year 2030, robots will be able to do all housework instead of us.
1, go -> to go
2,chicken -> chickens
3,don't -> doesn't
5, want ->
6,tomatos -> tomatoes
7,any -> some
8,is -> are
1.Would you to go to the movie theatre with us?
2.There is some chicken.
3.She doesn't vegetables and fish.
4.I an orange juice and some noodles.
5.Would you to go to the zoo with us?
6.There is some tomatos on the table.
7.There is some oranges and some apples.
8.What is there to drink?
Mình sửa hết lỗi sai rồi nhé!
Chúc bạn hok tốt nha!
11 Hung studies Enlish on Monday , Wednesday and Friday
12 There are twenty classrooms in her school
13 Children playing game at break time
14 There is a sofa in the livimng room
15 They don't usually eat lunch at home
__g__ 1. Where does your brother live? a. Oh I’d love to!
__h__ 2. What does he look ? b. He’s a bit boring. He reallydoesn’t anything.
___e_ 3. What’s he ? c. No, thanks. I’m full.
_b___ 4.What does he ? d. Orange Juice, please.
__c__ 5.Would you something to eat? e.He’s shortish with dark brown hair.
___a_ 6.Would you to have dinner with me on Friday? f. Yes, sure.
__f__ 7.Can you pass me that book, please? g. In Da Nang.
___d_ 8.What would you to drink? h. He’s friendly and easy-going
at -> on
Traffic at the freeway this morning was moving slowly
A B C D
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Từ at sửa lại thành on
- Traffic on the freeway this morning was moving slowly.
#Hoa_2008