2.This hall can be sit by one hundered of students
1. What is that motorbike's speed?
2. This hall can be sat in by one hundred students.
Choose from A, B, C, or D the one that best answers each of the questions. A pilot cannot fly by sight alone. In many conditions, such as flying at night and landing in dense fog, a pilot must use radar, an alternative way of navigating. Since human eyes are not very good at determining speeds of approaching objects, radar can show a pilot how fast nearby planes are moving. The basic principle of radar is exemplified by what happens when one shouts in a cave. The echo of the sounds against the walls helps a person determine the size of the cave. With radar, however, the waves are radio waves instead of sound waves. Radio waves travel at the speed of light, about 300,000 kilometers in one second. A radar set sends out a short burst of radio waves. Then it receives the echoes produced when the waves bounce off objects. By determining the time it takes for the echoes to return to the radar set, a trained technician can determine the distance between the radar set and other objects. The word “radar”, in fact, gets its name from the term “radio detection and ranging”. “Ranging” is the term for detection of the distance between an object and the radar set. Besides being of critical importance to pilots, radar is essential for air traffic control, tracking ships at sea, and for tracking weather systems and storms. 51. What is the main topic of this passage? A. The nature of radar. B. History of radar. C. Alternatives to radar. D. Types of ranging. 52. According to the passage, what can radar detect besides location of objects? A. Shape B. Size C. Speed D. Weight 53. The word “exemplified” in the passage can be replaced by_________. A. “specified” B. “resembled” C. “illustrated” D. “justified” 54. The word “shouts” in the passage most closely means_________. A. “exclaims” B. “yells” C. “shoots” D. “whispers” 55. Which of the following words best describes the tone of this passage? A. argumentative B. explanatory C. humorous D. imaginative 56. According to the passage, the distance between a radar set and an object can be determined by_________. A. the time it takes for a burst of radio waves to produce echoes when the waves bounce off the object B. the term “ranging” used for detection of the distance between an object and the radar set C. the time it takes for the radio waves to produce echoes and bounce off the object D. the time it takes for the echoes produced by the radio waves to return to the radar set 57. Which type of waves does radar use? A. tidal B. sound C. heat D. radio 58. The word “tracking” in the passage most closely means_________. A. sending B. searching for C. ranging D. repairing 59. Which of the following would most likely be the topic of the next paragraph? A. A history of flying. B. Other uses of radar. C. The technology used by pilots. D. Uses of some technology. 60. What might be inferred about radar? A. It takes the place of a radio. B. It has improved navigational safety. C. It was developed from a study of sound waves. D. It gave birth to the invention of the airplane.
Topic này dành cho các bạn muốn tìm hiểu về 15 cách nói "Tạm biệt" trong tiếng Anh và nó viết bằng tiếng Anh. Mình chỉ phiên dịch tiêu đề từng phần. Các bạn có thể thảo luận bằng cách comment xuống dưới. Mục đích của topic là mang lại sự hiểu biết cho mọi người về tiếng Anh, ngoài ra không có mục đích nào khác. Còn nếu vi phạm gì thì các bạn CTV có thể cân nhắc xóa :D
Nguồn: PhraseMix.com
Formal goodbyes (Những cách tạm biệt nghiêm túc, trang trọng) Goodbye.Most of the time, we use one of these casual phrases when saying goodbye to someone in English.
'Bye!A: See you later.
B: OK, have a good one.
A: You too. 'Bye.
B: 'Bye.
Bye bye!Later, man.
See you later. / Talk to you later.These goodbyes come from other languages, but are often used by English speakers.
Adios.Adios, amigos!
Ciao!
Viết lại câu
1. Work is very important for me. Family is also important to me
=>Work is_____________________________________________
2. Rap music is a kind of music, but R&B is quite different
=>R&B is quite _____________________________________
Give the correct forms of words :
1/ The youth should do their best to ........ to building their country . ( contribution )
2/ Nowadays there are many ....... forms of entertainment everywhere . ( variety )
3/ Are you ....... of the diffirence between the two life styles ? ( awareness )
4/ Sword Lake is a ........ place in Vietnam . ( history )
5/ He is the most famous ......... I've ever know . ( act )
6/ In ...... countries, people work an average of ten to twelve hours a day . ( industry )
7/ It is said that traveling a lot will .......... our mind . ( broad )
8/ There have been many ............ activities on these days . ( culture )
9/ In reply to : some countries, ........... has made young people buy things they don't need . ( advertise )
10/ It's easy to tell the ............. between butter and margarine . ( diffirent )
topic 1 talk about causes and effects of water pollution / air pollution / noise pollution / soil polluntion /,....and solutions to this problem
1.My grandfather is over 95 and he is.......... pretty poor health these dáy
A.on B. to C.with D.in
2.Joe congratulated Tony............ passing the exam
A.on B.at C.with D.about
3.The bad waether was blamed.... the series of power cuts
A.on B.For C.by D.with
4.It's dificult to pay one's bills when prices keep......
A.rising B.growing C.gaining D.raising
