định lý về quan hệ giữa tính vuông góc và song song

Advanced wordform: 38. There's no need to be _____ pessimistic about the situation. [DUE] 39. Greed has been the _____ of many a businessman. [DO] 40. He had been imprisoned for a year for gaining money by false _____. [PRETEND] 41. The child was _____ when he touched the bare wires. [ELECTRIC] 42. He has the _____ of a football player. [PHYSIC] 43. These drugs have a proven _____ effect on the nervous system. [DELETE] 44. Any attempt to _____ blame so many years after the incident is pointless. [PORTION] 45. The success of advertising proves that we are all highly _____. [SUGGEST]

We will going (A) to spend (B) our summer holiday (C) in Da Lat next month (D)

Tuyền truyền một đoạn văn 7 đến 10 câu về "MỘT NGÀY KHÔNG DÙNG BAO BÌ NI LÔNG" Huhu 😭😭😭 giúp em với ạ không chép mạng nha

các bạn giải nhanh hộ mình bài này với , mình cần gấp lắm , hạn chót là trước 5h chiều nay nha , mình cảm ơn

Một bao gạo 80kg đặt lên cái ghế 4kg, ghế 4 chân. Diện tích tiếp túc mặt đất mỗi chân là 16cm2. a)Tính áp suất CÁC chân ghế tác dụng lên mặt đất b) Tính áp suất MỖI chân ghế tác dụng lên mặt đất

Cho các số x,y thõa mãn điều kiện $x^{2}$ - 2xy + 6$y^{2}$ -12x + 2y + 41=0. Tính giá trị của biểu thức A= $\frac{2020-2019(9-x-y)^{2019} - (x-6y)^{2018} }{y1010}$

Một gen có chiều dài 0,51 micromet. Có số lượng Nucleotit 2 loại bổ sung trên mạch 1 là 450. a. Tính số liên kết H trên gen. b. Tính số lượng từng loại Nucleotit trên từng mạch đơn của gen. Biết mạch 1 của gen có A=300, X=400 Nucleotit. c. Tính số liên kết cộng hoá trị giữa đường và axit trên 1 mạch của gen

vẽ giùm mình Tel'annas thứ nguyên vệ thần chibi ( vẽ đơn giản thui nhé, ko cần nhiều chi tiết đâu ). CẢM ƠN CÁC BN NHOA !

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions. American Online is one of the big name on the Internet, and unlikely many other digital companies, it actually makes a profit. But the company which its rivals call the “Cyber-cockroach" was launched only in I992. Before that it was a small firm calledcontrol Video Corporation, and it made video games. Then Steve Case, a former Pizza Hut marketing executive arrived and took the company online, innovative, fast moving, and user-friendly, American Online appeals to people who want to surf the Internet, but who do not have a lot of experience. For the same reason “teachies", people who think they are more expert with computers, look down on American Online and its users. Recently, American Online (or AOL), as it calls itself) joined with Time Warner - a multi-million-dollar movie and magazine company - to create a L multimedia giant.Now, AOL has begun to expand abroad. In many European countries, including the United Kingdom, it is hard to buy a computer magazine that does not have a free AOL introductory offer. The company also puts advertisements onto the television, and employs people to hand out its free introductory disks at places like train stations. As the lnternet gets faster AOL is changing. With many homes getting high-speed connections through fiber optic cables or the new ADSL technology, the “Cyber- cockroach" will have to show that, like real cockroaches, it can survive in almost any environment. Câu 1: What is the passage about? A. A computer company. B. A software company. C. An Internet company. D. A video company. Câu 2: The word “it" in paragraph 1 refers to______ A. American Online B. Cyber-Cockroach C. Control Video Corporation D. Digital company Câu 3: Who does Steve Case work for? A. AOL B. Pizza Hut C. Control Video Corporation D. None of these Câu 4: How do “teachies” feel about American Online? A. They think it is a Cyber-cockroach. B. They think it is for experts. C. They think it is a movie and magazine company. D. They feel superior to its users. Câu 5: American Online has the following characteristics EXCEPT______ A. innovative B. fast moving C. user-friendly D. experienced Câu 6: People who use American Online are probably______ A. video game players B. "teachies” C. movie fans D. people new to the Internet Câu 7: American Online is an unusual digital company because_____ A. it used to make video games B. it is innovative C. it makes money D. it has joined with another company Câu 8: Which marketing idea is not mentioned? A. Advertisements on the lnternet. B. Advertisements on TV. C. Free disks in journals. D. People giving disks away. Câu 9: What does the article say about AOL’s future? A. It will do well. B. It will do badly C. It will face challenges. D. The article doesn’t say. Câu 10: This passage is about_____ A. technology B. a history of the Internet C. computer users D. a successful business