Cho tam giác ABC vuông tại A và có đường cao AH. a) Chứng minh ∆HBA đồng dạng ∆ABC. b)Gọi M,N lần lượt là trung điểm của BC và AB .Qua B vẽ đường thẳng vuông góc với BC cắt MN tại I . Chứng minh: IB^2 = IM . IN c) Gọi O là giao điểm của IC và AH . Chứng mnh: O là trung điểm AH Hãy tạo hình ảnh vẽ hình bài này

VẼ HÌNH , PLSS

ecognition voice          B. voice recognized    C. voice recognition    D. recognized voice

83. Teachers have a machine automatically check ________ .

A. attend                     B. attendance              C. attentively              D. attentive

84. Fingerprint _____ are fixed at the door, so place your finger on one of them before coming in.

A.  scanners                B. check                      C. robot                       D. recognition

85. He said that he _____ talk to his mother everyday on the Internet the following year.

A.  would                    B. will                         C. can                          D. is able to

86. She said that she was staying at home chatting on facebook _____ .

A. the moment            B. then                         C. now                         D. in the moment

87. The police said that she was not allowed to park _______.

A. in here                    B. here                         C. there                       D. on here

88. Susan: Before you use the webcam, make sure that you check this button right here to…

Jane: ___________ I wasn't listening. Which button?          

A. Thank you.               B. Hold on.              C. You must be kidding          D. So what now?

90. - Nick: I have been offered to be a president of our school science club.

- Mi: _________________

A. Great!                     B. Fine, then what?     C. How's everything!              D. How tired it is!

91. - Nam: I have passed my entrance exam to one of the best schools in my area.

- Mary: ______________.

A. What a pity!           B. Wow, I'd love to.    C. Can you bring me along?   D. Congratulations!   

PART IV. READING

Exercise 24. Fill in each blank with a word from the box.

as
make
machines
do
washing
that
because
modern
 

Many people think that in the future robots will (1) ______________ all the housework. They talk about robots (2) ______________ will be able to cook and robots that will tell us when we need to go shopping. They say there will be robots in our shoes that do the hoovering (3) ______________ we walk around the house! People think these robots will exist in ten years, and they think they will (4) ______________ a big difference to our lives. We all will have more

free time. But think about your house today. It is already full of (5) ______________! We don’t call them robots, but they do the housework for us. Do you do the (6) ______________ yourself, or do you use a washing machine? Do you do the washing-up yourself, or do you have a dish-washer? (7) ______________ houses are full of machines that help US do the housework every day. We don’t think they are special (8) ______________ they are everywhere. Can you imagine living 50 years ago? The future will be easy, but housework today isn’t so hard!

Exercise 25. Read the passage, and choose the correct answer A, B, C or D for each question.

Tornadoes

A tornado is a kind of storm which looks (1) ____________a huge funnel. Tornados are the strongest winds on earth. They can (2) ____________480km per hour. With such great strength, a tornado causes a lot of damage. It can (3) ____________trees, flatten buildings, and throw heavy things such as cars hundreds of metres. It is especially dangerous (4) ____________ people in cars or mobile homes.

Tornadoes (5) ____________ in their duration and the distance they travel.

Most (6) ____________ less than ten minutes and travel five to ten kilometres. Some special tornadoes can last several hours and travel up to more than 150km! Tornadoes can occur almost anywhere (7) ____________ earth, but most of them happen in the United States, especially in the Great Plains region. This area may (8) ____________ more than 200 tornadoes in each year.

1. A. like               B. as                            C. such                        D. for

2. A. arrive           B. go to                       C. reach                       D. speed

3. A. grow            B. uproot                     C. plant                       D. water

4. A. for                B.to                             C. in                            D. at

5. A. differ           B. similar                     C. different                 D. change

6. A. go                B. keep up                   C. happen                    D. last

7. A. in                 B. on                           C. for                           D. up

8. A. be                 B. cause                       C. provide                   D. experience

Exercise 26. Read the text and tick True (T) or False (F).

a. Choose the correct answer A, B, or C.

When Smartphones Become Even Smarter

Mobile phone technologies have developed rapidly over the last decades, and experts are making interesting predictions about smartphones of the future. They say that by 2035, smartphones will be able to change their shapes to meet the users’ needs. For example, you can fold your phone like a sheet of paper and put it in your wallet. Similarly, you can bend it and wear it as a watch. Moreover, new generations of smartphones can send and receive holographic pictures. By using holography, you will be able to participate in meetings without having to be at the meeting venue in person. You will also be able to interact in computer games as if you were a character in it. Besides, smartphones will have super strong sensors to read your mind and complete some tasks, such as making to-do lists and shopping online. They will be able to sense your mood, give advice and play suitable music. In the near future, many people may consider their smartphones their best friend, and they may interact with them even more than they do with their human friends.

1. The passage describes predictions about future smartphones offered by _____________.

A. companies                          B. experts                                C. users

2. According to the passage, what can a user do to his / her smartphone by 2035?

A. Change its shape.               B. Wear it as a necklace.        C. Make it into a wallet

3. According to the passage, future smartphones may use _____________ to help their users interact in computer games.

A. sensors                               B. generators                           C. holography

4. Which of the following tasks can a super smartphone NOT do for its users?

A. Check to-do lists.               B. Shop online.                       C. Give advice.

5. According to the passage, people may treat their super smartphones as _____________ in the near future.

A. their servants                      B. their colleagues                  C. their best friends

b. Complete each gap in the note below with no more than THREE words.

·         Smartphones of the future can ...

+ (1) _____________ according to their users’ demand.

+ exchange (2) _____________ pictures.

+ (3) _____________ their user’s mind.

+ sense their users’ (4) _____________ and play appropriate music.

·         In the near future, people may interact with their phones more than they do with their (5) _____________.

PART V. WRITING

Exercise 27. Rearrange the words to make meaningful sentences.

1. He/ Valentina Tereshkova/ the/ that/ into/ said/ space/ woman/ to/ was/ first/ travel

___________________________________________________________________________

2. It/ me/ if/ the/ won’t/ email/ replaces/ completely/ regular mail/ in/ surprise/ near future

___________________________________________________________________________

3. The students/ future/ the/ means/ finish/ about/ transport/ they/ would/ survey/ said/ of

___________________________________________________________________________

4. Will/use/ for/special telecommunication lines/the/ systems?/ they/video conferencing

___________________________________________________________________________

5. The scientists/ that/ were/ a/ working on/ said/ vehicle/ which/ like/ looked/ they/ flying cars

___________________________________________________________________________

6. on phone/ We/ talked/ an hour/ for/ more than/ yesterday/ .

___________________________________________________________________________

7. If/ will become/ we/ use/ our phones/ too much, /we/ them/ dependent on/ .

___________________________________________________________________________

8. on the Internet/ Many teenagers/ prefer/ chatting/ to/ in person/ meeting their friends/ .

___________________________________________________________________________

9.  crossword puzzle/ was/ doing/ a/ ./ Mark

___________________________________________________________________________

10. and/ a/ were singing/ Mai/ Lan/ pop song/ .

___________________________________________________________________________

11. the/ Phong/ cleaning/ was/ board/ .

___________________________________________________________________________

12. were reading/ Nick/ and/ together/ a/ Nam/ comic book/ .

___________________________________________________________________________

13. Mi/ something/ in/ was drawing/ her/ notebook/ .

___________________________________________________________________________

14. mobile phones/ the near future,/ In/ will/ run on/ solar energy/ .

___________________________________________________________________________

15. will/ become popular/ Telepathy devices/ in 30 years/ .

___________________________________________________________________________

Exercise 28. Complete the second sentences so that it has a similar meaning to the first one.

1. David said, “Robots can never replace human beings.”

à David said that_________________________________________________________________________

2. The man found the car’s battery and its interior design attractive.

à The man was attracted____________________________________________________________________

3. On arriving in Da Nang, I made a video call home.

à When I________________________________________________________________________________

4. “You have to study harder if you want to be a doctor.”

à She told me that_________________________________________________________________________

5. My friend said that scientists would explore Mars in the near future.

à My friend said, “_______________________________________________________________________ ”

6. We can see our loved ones every moment thanks to video call.

à Video call makes it______________________________________________________________________

7. We spent two hours uploading our video files to YouTube.

à It took________________________________________________________________________________

8. “Why don’t you swap the bookcase for the TV?” she said to me.

à She suggested that_______________________________________________________________________

9. “Most people will use flying cars”, Tom said.

à Tom told me that _______________________________________________________________________

10. “I am planning to send my friend an email”, Han said.

à Han said that ___________________________________________________________________________

Câu 1. a. Kể tên các trung tâm kinh tế lớn của Bắc Mỹ.

b. Trình bày đặc điểm dân cư Trung và Nam Mỹ (số dân, phân bố dân cư, đô thị hóa).

Câu 2. a. Dân cư châu Đại Dương có đặc điểm gì?

b. Kể tên các bộ phận của châu Đại Dương và các vùng đảo châu Đại Dương.

c. Kể tên các loại thực vật, động vật độc đáo của Ô-xtrây-li-a.

Câu 3. a. Trình bày đặc điểm địa hình châu Đại Dương.

 b. Trình bày đặc điểm khí hậu châu Đại Dương.

Câu 4. a. Nguyên nhân nào đã khiến cho các đảo và quần đảo của châu Đại Dương được gọi là "thiên đàng xanh" của Thái Bình Dương?

b. Giải thích tại sao phần lớn diện tích lục địa Ôxtray-li-a là hoang mạc?

Câu 5. Phân tích sự phân hóa tự nhiên của Trung và Nam Mỹ theo chiều Bắc – Nam và theo chiều Đông - Tây.

cho dường tròn (O) và  diểm M ở ngoài (O) vẽ tiếp tuyến MA tới (O) (A là tiếp điểm ).gọi E là trung điểm đoạn AM và các điểm I,H theo thứ tự là hình chiếu của E và A xuống OM . qua M vẽ cát tuyến MBC tới (O)(MB<MB và tia MC ở giữa 2 tia MO , MA ) 1 CMR 2 tam giác MBH và MDC đồng dạng từ đó suy ra tứ giác BCOH nội tiếp

( em chép thiếu các ý còn lại á mọi người cố gúp em nhá mai em phải mộp rồi ạ ,em cẩm ơn ạ)

PART 3. Word Formation (6 questions)

Write the correct form or compound of the words in brackets.

17.  Life in space is really ___diferent________ from life on Earth. (DIFFER)

18.  In some countries, people will live ___________ in earthscrapers. (GROUND)

19.  In the next 20 years, many homes might be smart homes with robot ___________ to do the chores. (HELP)

20.  In the future, many people will live under the sea; so ___________ cities will become popular. (WATER)

21.  In the future, many people will live in _______ - cities with a population of over ten million people. (CITY)

22.  A(n) ___________ house is a house that is good for the environment. (FRIEND)

Khi thay đổi trang phục( tư thế) trong phần mềm Scratch liên tục sẽ tạo ?

A. hiệu ứng đổi màu

B .hiệu ứng xoay tròn

C .hiệu ứng tạo tương tác

D. hiệu ứng hoạt hình.

lúc 6 giờ 30 phút,một người đi xe máy từ A đến B.Dọc đường người đó nghỉ 25 phút. Tính vận tốc của người đó, biết người đó đến B lúc 8 giờ 10 phút và quãng đường AB dài 55 km

hay tả về cuộc đời cuộc đời sinh viên của các em 

cho tam giác abc vuông tại a. đường phân giác BD(D thuộc AC). kẻ DE vuông góc với BC. a) chứng minh tam giác ABC = tam giác EBD b) chứng minh tam giác ADE cân c)so sánh AD và DC d) kẻ đường cao AE của tam giác ABC , chứng minh AE là tia phân giác EAC .Mai mik nộp bài rồi , mong mọi giải giúp..(Vẽ hình hộ luôn với ah )

Số học sinh của ba lớp 7A,7B,7C tỉ lệ với 7,8,9.Biết số học sinh 7C nhiều hơn 7A là 10 học sinh,tìm số học sinh mỗi lớp.