6A

7D( sau any+N -> B,D, câu mang nghĩa phủ định nên chọn C,D => chọn D)

8B

9A

10A

11C

12A

13B

11A

Đáp án:

1. A. adore B. addict C. bracelet D. leisure

2. A. event B. weird C. netlingo D. detest

3. A. virtual B. unique C. steal D. waterwheel 

Thể bị động của tiếng Anh thì phụ thuộc vào dạng (form) hay thì (tense) của động từ đó, ví dụ:

• Dạng V-ing của động từ:  writing → being written
• Dạng To Infinitive của động từ:  to write → to be written
• Thì hiện tại hoàn thành:  have written → have been written
• Thì quá khứ tiếp diễn:  was writing → was being written

1. She will be writting a letter.

\(\Rightarrow\)A letter will be being written by her.

2. I will be doing my homework then.

\(\Rightarrow\)My homework will be being done then by me.

3. My family will be visiting my grandparents next weekend.

\(\Rightarrow\)My grandparents will be being visited next weekend by my family.

4. They will be eating dinner at 7 o'clock.

\(\Rightarrow\)Dinner will be being eaten at 7 o'clock by them.

5. We will be going to stay at Melon hotel.

\(\Rightarrow\)Melon hotel will be being gone to stay at by us.

Câu 1: Gọi số học sinh mỗi khối \(7,8,9\)lần lượt là \(x,y,z\)học sinh \(x,y,z\inℕ^∗\).

Vì mỗi học sinh khối \(7,8,9\)trồng được theo thứ tự là \(2,3,4\)cây và số cây mỗi khối trồng được bằng nhau nên 

\(2x=3y=4z\Leftrightarrow\frac{x}{6}=\frac{y}{4}=\frac{z}{3}\)

Áp dụng tính chất dãy tỉ số bằng nhau ta được: 

\(\frac{x}{6}=\frac{y}{4}=\frac{z}{3}=\frac{x+y+z}{6+4+3}=\frac{130}{13}=10\)

\(\Leftrightarrow\hept{\begin{cases}x=10.6=60\\y=10.4=40\\z=10.3=30\end{cases}}\)(tm) 

Câu 2: 

Có \(s=vt\)nên \(v\)và \(t\)là hai đại lượng tỉ lệ nghịch. 

Vận tốc ô tô tăng lên \(20\%\)thì thời gian thực tế bằng số phần thời gian dự định đi trên nửa quãng đường đó là: 

\(1\div\left(1+20\%\right)=\frac{5}{6}\)

Thời gian dự định đi nửa quãng đường là: 

\(10\div\left(6-5\right)\times6=60\)(phút) 

Thời gian thưc tế ô tô đi từ A đến B là: 

\(60\times2-10=130\)(phút) 

Trả lời: 

1/ Gọi số bông hoa của ba học sinh A;B;C lần lượt là a; b; c ( bông hoa; \(a;b;c\inℕ^∗\) )

Theo bài ra, ta có: 

\(a:b:c=2:3:4=\frac{a}{2}=\frac{b}{3}=\frac{c}{4}\) và ( a + c ) - b = 6

Áp dụng tc dãy tỉ số bằng nhau, ta có:

\(\frac{a}{2}=\frac{b}{3}=\frac{c}{4}=\frac{\left(a+c\right)-b}{\left(2+4\right)-3}=\frac{6}{3}=2\)

\(\Rightarrow\hept{\begin{cases}a=4\\b=6\\c=8\end{cases}}\) ( tm )

Vậy số bông hoa của 3 bạn A; B; C lần lượt là: 4 bông; 6 bông; 8 bông

2/ Gọi chiều rộng và chiều dài của HCN lần lượt là x và y ( cm; x và y > 0 )

Theo bài ra, ta có: 

\(x:y=4:7\Rightarrow\frac{x}{4}=\frac{y}{7}\) và xy = 112 

Đặt \(\frac{x}{4}=\frac{y}{7}=k\left(k\ne0\right)\)

\(\Rightarrow\hept{\begin{cases}x=4k\\y=7k\end{cases}}\)

Ta có: xy = 112

=> 4k.7k = 112

=> 28k² = 112

=> k² = 4

=> k = 2 hoặc k = - 2

+) Với k = 2 ta có: \(\hept{\begin{cases}x=4k=4.2=8\\y=7k=7.2=14\end{cases}}\) ( tm )

+) Với k = - 2, ta có: \(\hept{\begin{cases}x=4k=4\left(-2\right)=-8\\y=7k=7\left(-2\right)=-14\end{cases}}\) ( không tm )

Vậy chu vi hình chữ nhật là: 2 ( x + y ) = 2 ( 8 + 14 ) = 44 ( cm )

Trả lời:

1, Ta có:  \(x+y=\frac{1}{2};y+z=\frac{1}{3};z+x=\frac{1}{4}\)

\(\Rightarrow x+y+y+z+z+x=\frac{1}{2}+\frac{1}{3}+\frac{1}{4}\)

\(\Rightarrow2x+2y+2z=\frac{13}{12}\)

\(\Rightarrow2\left(x+y+z\right)=\frac{13}{12}\)

\(\Rightarrow x+y+z=\frac{13}{24}\)

\(\Rightarrow\hept{\begin{cases}x=\frac{13}{24}-\frac{1}{3}=\frac{5}{24}\\y=\frac{13}{24}-\frac{1}{4}=\frac{7}{24}\\z=\frac{13}{24}-\frac{1}{2}=\frac{1}{24}\end{cases}}\)

2, Ta có: \(x:y:z=3:5:\left(-2\right)\Rightarrow\frac{x}{3}=\frac{y}{5}=\frac{z}{-2}\)

Áp dụng tc dãy tỉ số bằng nhau, ta có:

\(\frac{x}{3}=\frac{y}{5}=\frac{z}{-2}=\frac{5x-y+3z}{5.3-5+3.\left(-2\right)}=\frac{124}{4}=31\)

\(\Rightarrow\hept{\begin{cases}x=93\\y=155\\z=-62\end{cases}}\)

3, Ta có: \(2x=3y\Rightarrow\frac{x}{3}=\frac{y}{2}\Rightarrow\frac{x}{21}=\frac{y}{14}\left(1\right)\)

\(5y=7z\Rightarrow\frac{y}{7}=\frac{z}{5}\Rightarrow\frac{y}{14}=\frac{z}{10}\left(2\right)\)

Từ (1) và (2) => \(\frac{x}{21}=\frac{y}{14}=\frac{z}{10}\)

Áp dụng tc dãy tỉ số bằng nhau, ta có:

\(\frac{x}{21}=\frac{y}{14}=\frac{z}{10}=\frac{3x-7y+5x}{3.21-7.14+5.10}=\frac{30}{15}=2\)

\(\Rightarrow\hept{\begin{cases}x=42\\y=28\\z=20\end{cases}}\)

31. He is  sure to have an accident because he drives very ........careless.............      CARE

32. One of them is ...........walking...............for fun                                                                WALK

33. After the .........invention...........of equipment, man could swim freely underwater            INVENT

34. He is a famous football..............player...............                                                            PLAY

35. Peter can solve problems................wisely..........................                                            WISE

41. Where’s the ……nearest…… post office from here, Tam ?                              Near

42. Hoa has a pen pal from France and they write to each other……regularly…… . regular

43. There are four ……musicians……… in that pop music.                                        Music

44. I have ……less…… time to play than my friend.                                         little

45. We take part in many different ……activities…… at recess.                                ac

II. Choose from the four options given C marked A, B, C or D one best answer to complete each sentence by choosing the corresponding letter A, B, C or D.

11. Playing chess after dinner sounds...................................to me

A. boring                     B. bored                                  C. boringly                  D. boredom

12. They sat and watched the black and white programs ...................

A. all the evening        B. all of the evening    C. all evening D. all of evening

13. People of................can take part in the walking activity

A. every age    B. each age                              C. all ages                   D. all the ages

14. Peter can drive a car and ......................his sister Mary

A. too can                    B. can also                              C. so can                     D. can so

15. That boy is better..................history than I am

A. for               B. with                                    C. at                             D. in

16. Lien never eats durians because she doesn’t lik.e their.................

A. smell                       B. smelly                                 C. smells                     D.  smelled

17. People in Asia often drink................................

A. some tea                             B. the tea                                 C. tea               D. many tea

18. I don’t want much sugar in my coffee. Just.........., please

A. few             B. little                                    C. a little                     D. a few

19. If he eats all that food, he eats............................

A. too much    B. too many                C. quite much D. quite many

20. Do you often help your parents...........................the housework?

A. with                        B. about                                   C. for               D. at

21. Please .............. the milk carefully. I don’t want to boil over.

A. see                          B. watch                                  C. look at                    D. noe

22. “Was he disappointed ?” – “Yes, he found the movie .................”

A. boring                     B. boringly                              C. bors             D. bored

23. ............ 20 September, 1529, five small ship set sail from Spain.

A. at                            B. in                                        C. on                           D. by

24. Every student in those five rooms must bring .............. own book to class.

A. one’s                       B. his                                       C. their                        D. someone’s

25. “Was the competition a success ?” “Yes, ............ people took part in it more than usual”.

A. more                       B. fewer                                  C. less              D. many

26. Lien never eats durians because she doesn’t their .................. .

A. smell                       B. smelly                                 C. smells                      D. smelling

27. Some people are used to ................ in crowded streets and don’t mind it at all.

A. riding                      B. ride                         C. rides                        D. is riding

28. She can not skate board, and I can’t ....................... .

A. too                          B. neither                                C. either                      D. so

29 . When I was a boy, I ................... tea to coffee.

A. prefer                      B. preferred                             C. prefers                    D. prefering

30. Every girl ought to learn ................... to look.

A. what                       B. when                                   C. how            D. where

Đáp án

Old furniture is sold by the man at the end of the street 

Học tốt

Old furniture is sold at the end of the street by the man.