5x-x-13=27

5x-1x=27+13

5x-1x=40

x.(5-1)=40

x.4=40

x=40:4

x=10

HT J.H. SCHOOL Mr. Kien ĐỀ THI THỬ HỌC KỲ II TRỰC TUYẾN (ONLINE SECOND TERM TRIAL TEST) School year: 2020 – 2021 Time: 60 minute (including the listening part) TEST 1 PART A : LISTENING I. Listen to a girl talking about Tet holiday in Viet Nam. Fill each of the gaps with A WORD. You will listen TWICE. (1p) Tet holiday in Viet Nam Duration: (1) ______ days Being the (2) ______ holiday in Viet Nam Should: - (3) ______ about good things - wear (4) __colours Shouldn’t: (5) ______ or swear II. Listen to some students talking about Tet holiday. Match the people with the activities they do on Tet holiday. There is one extra activity. You will listen TWICE. (1p) 1. Nam A. buy and arrange flowers 2. Trang B. make chung cake 3. Toan C. clean the house and furniture 4. Hoa D. go to visit grandparents 5. Minh E. visit relatives in the south F. buy sweets and cookies PART B. LANGUAGE FOCUS I. Choose the best answer A, B, C or D to complete the sentences. (2p) 1. There aren’t ___________ good films on television at the moment. A. some B. any C. much D. a lot 2. If we cut down more forests, there ___________ more floods. A. are B. were C. have been D. will be 3. That is ___________ book I’ve ever read. A. the borest B. the most boring C. the boring D. the most bored 4. Playing computer games ___________ is not good for you. A. too much B. a little C. a few D. so many 5. The Three Rs ___________ for Reduce, Reuse and Recycle. A. stand B. sit C. make D. explain 6. “_____________ a nice T-shirt, Trang!” – “Thank you.” A. How B. What C. Which D. It 7. My brother can’t swim _____________ he’s afraid of water. A. because B. but C. and D. so 8. Kien is not very ___________. He never plays games. A. sport B. sporting C. sporty D. sports 9. There are too many buildings _____________ this city. There aren’t enough parks for children. A. in B. at C. with D. on 10. “I’ve just received a scholarship.” –“_____________!” 2 A. Really B. Thank you C. Congratulations D. Well II. Supply the corect tense or form of the verb in parentheses. (1p) 1. My school (have)....................................................two floors. 2. Look ! Hoa (play)………........................... soccer with the boys in her class. 3. What about (visit)....................................................our parents? 4. They (not go).....................................................swimming since yesterday. 5. You mustn’t (eat) ………........................……food in the classroom. PART C. READING I. Read the following passage and put a word in the box in each of the numbered blanks. (0.5p) delicious - weather - but - going - people July 20 Hi Nick, Hue is a great city. The (1)______ is fine. It's sunny all the time. The food is cheap and (2)________ The (3) _________ here are friendly and hospitable. The hotel where we’re staying is small (4)______ comfortable. Yesterday we visited the historic monuments. Tomorrow we’re (5) ________ on a trip along the Huong River. You must visit this city someday. You’ll love it. Bye for now! Cheers, Mi 1____________, 2____________, 3____________, 4____________, 5____________ II. Choose the correct word A, B, C or D for each gap to complete the following passage. (0.5p) AIR QUALITY There (1) ________ many ways of spending free time (2) ________ Australia. Some people are (3) _______ of skiing in Snowy Mountain or riding a surfboard in Queensland. Others love watching Kangaroos and Koalas in wild forests. My sister says she only enjoys (4) ________ Sydney from the skywalk. But I myself going to Sydney Opera House where the great opera singers of the world can (5) ________ heard. If you are bored with listening to the opera singing, there will always be at least two or three other shows to suit your taste. 1. A. is B. be C. are D. was 2. A. in B. at C. of D. for 3. A. keen B. interested C. surprised D. fond 4. A. watch B. watches C. watching D. watched 5. A. been B. being C. be D. to be III. Read the following passage and do the tasks below. (1p) My name is Quang. I am in class 6A1 at Nguyen Du School. It is a small school on Nguyen Du street. My classroom is on the first floor. There are forty students in my class. My form teacher is Miss Mai. She teaches us Math. All of my classmates are really kind and hard-working. We always finish all homework at home. Every day, we start classes at seven o’clock and have a 15-minute break at five past nine. My school has a big schoolyard so the students usually play soccer or skip rope at break time. After that, we are back to our room and finish class at half past eleven. 1. Which floor is Quang's classroom in? A. The first floor B. The second floor C. The third floor 2 What is NOT true? 3 A. Quang's in grade 6 B. Quang's classmate are all nice.C. Quang's school is big 3. . What subject does Quang's form teacher teach? ............................................................................................................................................................. 4. What time does Quang have break time? ............................................................................................................................................................. 5. What do the students usually do at break time? ............................................................................................................................................................. PART D. WRITING I. Rearrange the sentences using the following words. (1p) 1. Our/ last/ team/ played/ Saturday/ 6E team/ with/./ ............................................................................................................................................................. 2. Don’t/ food and drink/ into/ bring/ please./ ,/ the gym/ ............................................................................................................................................................. 3. every/ The Olympic Games/ four years./ take place/ ............................................................................................................................................................. 4. you/ Have/ sung/ ever/ karaoke?/ ............................................................................................................................................................. 5. a week/ three times/ My/ sister/ aerobics/ does/ keep fit/ to/./ ............................................................................................................................................................. II. Complete the second sentence so that it means the same as the sentence before. (1p) 1.She is interested in watching television. => She s................................................................................................................................ . 2.The Nile is the longest river in the world. => No river................................................................................................................................... 3.We live near the school, but they don't. => They live.............................................................................................................................. . 4.We will probably go to the Moon for our summer holidays in 2050. => We might.............................................................................................................................. . 5.In the future, home robots can do all our housework. => In the future, home robots will............................................................................................... III. Make sentences using the words and phrases given. (1p) 1. She/ live/ her parents/ 85 Hai Ba Trung Street . => …………………………………………………………………………………………. 2. He/ have/ short black hair/ round eyes. >……………………………………………………………………..……………………… 3. Who/ the/ youngest/ your family? >……………………………………………………………………..……………………… 4. Would you / go/ Mai’s birthday party/ me? >…………………………………………………………………………..………………… 5. What/ weather/ / Ha Noi ? >…………………………………………………………………………………………….. THE END

ko cs j

Đề trường mình đó

Bao giờ bạn cần mà mình có thì mình gửi tiếp nhé

Thầy mình mới giao 1 bài thôi

sorry mik viết thiếu, là cho mik tham khảo nhé, ở câu cuối í....

ko

bc

Res là gì vậy bạn

a) Có \(\left|x-3y\right|^5\ge0\);\(\left|y+4\right|\ge0\)

\(\rightarrow\left|x-3y\right|^5+\left|y+4\right|\ge0\)

mà \(\left|x-3y\right|^5+\left|y+4\right|=0\)

\(\rightarrow\left\{{}\begin{matrix}\left|x-3y\right|^5=0\\\left|y+4\right|=0\end{matrix}\right.\)

\(\rightarrow\left\{{}\begin{matrix}x=3y\\y=-4\end{matrix}\right.\)

\(\rightarrow\left\{{}\begin{matrix}x=-12\\y=-4\end{matrix}\right.\)

b) Tương tự câu a, ta có:

\(\left\{{}\begin{matrix}\left|x-y-5\right|=0\\\left(y-3\right)^4=0\end{matrix}\right.\)

\(\Leftrightarrow\left\{{}\begin{matrix}x=y+5\\y=3\end{matrix}\right.\)

\(\Leftrightarrow\left\{{}\begin{matrix}x=8\\y=3\end{matrix}\right.\)

c. Tương tự, ta có:

\(\left\{{}\begin{matrix}\left|x+3y-1\right|=0\\\left|y+2\right|=0\end{matrix}\right.\)

\(\Leftrightarrow\left\{{}\begin{matrix}x=1-3y\\y=-2\end{matrix}\right.\)

\(\Leftrightarrow\left\{{}\begin{matrix}x=7\\y=-2\end{matrix}\right.\)

a. \(\left|x-3y\right|^5\ge0,\left|y+4\right|\ge0\Rightarrow\left|x-3y\right|^5+\left|y+4\right|\ge0\) \(\Rightarrow VT\ge VP\)

Dấu bằng xảy ra \(\Leftrightarrow\left\{{}\begin{matrix}\left|x-3y\right|^5=0\\\left|y+4\right|=0\end{matrix}\right.\) \(\Leftrightarrow\left\{{}\begin{matrix}x=3y\\y=-4\end{matrix}\right.\) \(\Leftrightarrow\left\{{}\begin{matrix}x=-12\\y=-4\end{matrix}\right.\) Vậy...

b. \(\left|x-y-5\right|\ge0,\left(y-3\right)^4\ge0\Rightarrow\left|x-y-5\right|+\left(y-3\right)^4\ge0\) \(\Rightarrow VT\ge VP\)

Dấu bằng xảy ra \(\Leftrightarrow\left\{{}\begin{matrix}\left|x-y-5\right|=0\\\left(y-3\right)^4=0\end{matrix}\right.\) \(\Leftrightarrow\left\{{}\begin{matrix}x=y+5\\y=3\end{matrix}\right.\Leftrightarrow\left\{{}\begin{matrix}x=8\\y=3\end{matrix}\right.\) Vậy ...

c. \(\left|x+3y-1\right|\ge0,3\cdot\left|y+2\right|\ge0\Rightarrow\left|x+3y-1\right|+3\left|y+2\right|\ge0\) \(\Rightarrow VT\ge VP\) Dấu bằng xảy ra \(\Leftrightarrow\left\{{}\begin{matrix}\left|x+3y-1\right|=0\\3\left|y+2\right|=0\end{matrix}\right.\) \(\Leftrightarrow\left\{{}\begin{matrix}x=1-3y\\y=-2\end{matrix}\right.\Leftrightarrow\left\{{}\begin{matrix}x=1-\left(-2\right)\cdot3=7\\y=-2\end{matrix}\right.\) Vậy...

Chân thành cảm ơn các bạn!

tự đoán

Doraemon,Conan,MrBean,...gì đó

Doremon, tom and jerry,.....

Em rất thích xem phim hoạt hình, đặc biệt là “Tom and Jerry”. Trong đó, chú chuột Jerry là nhân vật mà em yêu thích nhất.

Ồ! Trông chú chuột Jerry kìa, chú ta mới xinh xắn làm sao! Chú có bộ lông hung nâu mượt mà, đôi tai nhỏ vểnh lên nghe ngóng để cảnh giác sự rình rập của chú mèo Tom. Với thân hình nhỏ bé , bốn chân nhanh nhẹn và một cái đầu thông minh tuyệt đỉnh nên chú luôn thoát khỏi mọi cạm bẫy mèo Tom đặt ra. Đôi khi, chú còn chơi lại mèo Tom những cú đau điếng. Cái đuôi của chú bé xíu luôn ngoe nguẩy trêu chọc chú mèo Tom.

Với trí thông minh vốn có và kinh nghiệm dày dặn, chú chuột Jerry luôn lừa được mèo Tom vào bẫy và chuồn đi một cách an toàn. Cả bộ phim là cuộc rượt đuổi đầy kịch tính, tạo nên tiếng cười bất tận đã khiến bộ phim ngày càng trở nên quen thuộc và không thể thiếu được với trẻ em chúng ta.

Chú chuột Jerry quả là rất thông minh và đáng yêu phải không nào? Bộ phim “Tom and Jerry” thật là tuyệt vời.

Xét △ACD và △BDC có:

\(\begin{matrix}AD=BC\left(gt\right)\\\hat{D}=\hat{C}\left(gt\right)\\CD\text{ }chung\end{matrix}\Rightarrow\Delta ACD=\Delta BDC\left(c.c.c\right)\Rightarrow\hat{ACD}=\hat{BDC}\text{ }hay\text{ }\text{ }\hat{ICD}=\hat{IDC}\)

⇒ △ICD cân tại I ⇒ \(ID=IC\left(1\right)\)

△KCD có: \(\hat{C}=\hat{D}\) ⇒ △KCD cân tại K ⇒ \(KD=KC\left(2\right)\)

Từ (1) và (2). Suy ra KI là đường trung trực của CD (3)

Tương tự ta cũng có: \(IA=IB;KA=KB\). Suy ra KI là đường trung trực của AB (4)

Từ (3) và (4). Vậy: KI là đường trung trực của AB và CD

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