Giải họ mk vs ạ :'(

\(M=\left(\dfrac{\sqrt{x}}{\sqrt{x}-2}+\dfrac{\sqrt{x}}{\sqrt{x}+2}\right).\dfrac{x-4}{\sqrt{4x}}\)

a) tìm điều kiện của x để biểu thức có nghĩa

b) rút gọn biểu thức M

\(\dfrac{x\sqrt{x}+x}{\sqrt{x}+1}-\dfrac{x-2\sqrt{x}+1}{\sqrt{x}-1}với..x\ge0,x\ne1\) 

a) rút gọn biểu thức A         b) tìm x để A có gt =4

c) tìm x để A dương

Complete the second sentence with the same meaning so that it has the same meaning as the first one. (1 m).

31. You must do the test carefully.

The test..............................................................................................................................

32. We haven’t done the experiment on animals before.

This....................................................................................................................................     

33. What a pity! I can’t go for a picnic with you.

1 wish................................................................................................................................

34. “Are you using my pen, Mr Trung?”, Miss Hoa said.

Miss Hoa asked.................................................................................................................

35. Study hard or you won’t pass the exam.

If                     

Read the article about talking to people on the Internet. Are the statements 1-5 right (A), Wrong (B) or ‘Doesn’t say’ (C)? Write A, B or c next to each statement. (1 m).

Communication

The way we communicate with our friends has changed. These days, we have conversations on the computer or the mobile phone. We don’t write letters much more. We write emails instead. Internet sites like Facebook help us find old friends, talk with other people and join groups with similar interests. Facebook is also useful if you want to invite people to a party or a concert. The good thing is we can invite lots of people at the same time, so it's quicker and cheaper than sending lots of invitations.

26.We talk to each other in the same way as people did in die past.       ................

27. People use technology several times a day to communicate.             ................

28. Pcoplc write emails less now than they used to do.                           ................

29. You can find people from the past on the Internet.                           ................

30. The Internet is a quick way of inviting friends to a party.                 ................

Choose one of the words given to fill in each gap. (1 m)

in

poem

exciting

worn

and

topic

at

Fashion is a big business in today's world. From magazines to TV programmes and even competitions,fashion is a popular (16) ..................... for people of all ages. Fashion is about die clothes, shoes and accessories that are designed made, sold and (17) ..................... every day. And the fashion world is one that changes all the time. A pair of shoes that was (18) ..................... fashion a month ago may not be fashionable now. People who work in fashion are always trying to think of the most (19) ..................... fashion ideas. These people experiment with fashion (20) ..................... create some strange and wonderful clothing and fashion items.

Complete the conversation, using the questions given. (0.5m)

a. Which skills do you want to improve?

b. Do you like studying English?

c. Why are you studying English here

d. What do you do?

e. Did you learn English at school ?

Nga: (21)........................................................................................................

Lan: I need it for my job.

Nga: Really? So,(22).............................................................................

Lan: I work for a bank, an international bank in Ha Noi.

Nga: Oh, I see (23)........................................................................................

Lan: Yes, and at university, too.

Nga: (24) .......................................................................................................                        

Lan: I want to improve my listening and speaking skills.

Nga: (25) .......................................................................................................

Lan: Oh, yes. It’s an interesting language and it s very usetul.