Một vật bắt đầu trược không ma sát từ đỉnh mặt phẳng nghiêng gốc 30, dài 5 m. Lấy g =10 m/s^2. Tính tốc độ khi vật trược đến chân mặt phẳng nghiêng

kim loại tác dụng với axit H2SO4, HCl tạo ra nhiều H2 nhất Hãy giải thích bằng cách viết pthh

(49 ^25 . 125^10 .2^8 -5^30 . 7^49 . 4^ 5 ) : ( 5^29 . 16^2 . 7^48 )

11 Read the following passage, then choose the correct answer to questions: The world’s first film was shown in 1895 by two French brothers, Louis and Auguste Lumiere. Although it only consisted of short and simple scenes, people loved it and films have been popular ever since. The first films were silent, with the title on the screen to explain the story. Soon the public had their favourite actors and actresses and the first film stars consequently appeared. In 1927, the first “talkie”, a film with sounds, was shown and since then the public would only accept this kind of films. Further improvements continued, particularly in America, where 90 percent of all films were produced. With the arrival of television in the 1950s, fewer people went to see films. However, in recent years, the number of audiences has increased again. More countries have started to produce films, film-making has been influenced. In particular, there are currently many national film industries. The best title of the passage is most probably ____________ A. Silent films. B. Film producers. C. Current national film industries. D. The history of films. 12 Mark the letter A, B, C, D on your answer sheet to indicate a meaningful sentence from the words and phrases given A chemical factory /our town/ polluted/ the river/ lately/? A. A chemical factory in our town have polluted the river lately, haven’t it? B. A chemical factory in our town has polluted the river lately, didn’t it? C. A chemical factory in our town has polluted the river lately, hasn’t it? D. A chemical factory in our town polluted the river lately, hasn’t it? 13 Mark the letter A, B, C or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions. In the city, more teenager (A) have committed (B) illegal activities (C) these days (D). A. teenager B. have commited C. activities D. days 14 Mark the letter A, B, C, D on your answer sheet to indicate a meaningful sentence from the words and phrases given We/ believe/ urban transport pods/ travel/ around 30 kph. A. We believe that urban transport pods can travel at around 30 kph. B. We believe that urban transport pods can travel around 30 kph. C. We believe that urban transport pods will be travel at around 30 kph. D. We are believing that urban transport pods can travel at around 30 kph. 15 Mark the letter A, B, C or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions. Will we travelling (A) in driverless (B) and high-speed (C) cars in the next (D) ten years? A. Will we travelling B. driverless C. high-speed D. The next 16 Mark the letter A, B, C or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions. This time (A) next week, we will take (B) a test on (C) sources of (D) energy. A. take B. This time C. on D. of 17 Mark the letter A, B, C or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions. We should help the elderly and orphans because they need our hands. A. want B. need C. ought to D. might 18 Mark the letter A, B, C or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions. If we are able to collect solar energy, we will be sure to have this abundant source of power. A. limited B. necessary C. natural D. plentiful 19 Mark the letter A, B, C or D on your answer sheet to indicate the best sentence that can be made from the word cues given. Solar energy / used / in the world / many countries. A. Solar energy will be used in the world by many countries. B. Solar energy are used in the world in many countries. C. Solar energy are used in the world by many countries. D. Solar energy will be used in the world on many countries. 20 Mark the letter A, B, C or D on your answer sheet to indicate the best sentence that can be made from the word cues given. At this time next week/ students/ play/ soccer/ playground. A. At this time next week, the students will be playing soccer in the playground. B. At this time next week, the students will playing soccer in the playground. C. At this time next week, the students will play soccer in the playground. D. At this time next week, the students will be played soccer in the playground.

Giúp mik c5 c6 vs ạ đang cần gấp

viết đoạn văn về chủ đề quê hương sử dụng 1 câu đặc biệt, 1 trạng ngữ chỉ thời gian, nơi chốn và nguyên nhân

Vẽ oc semi Digi ko tradi Full line liếc, màu mè Kí đầy đủ Chụp cả layer Làm đúng y/c

11 Read the following passage, then choose the correct answer to questions: The world’s first film was shown in 1895 by two French brothers, Louis and Auguste Lumiere. Although it only consisted of short and simple scenes, people loved it and films have been popular ever since. The first films were silent, with the title on the screen to explain the story. Soon the public had their favourite actors and actresses and the first film stars consequently appeared. In 1927, the first “talkie”, a film with sounds, was shown and since then the public would only accept this kind of films. Further improvements continued, particularly in America, where 90 percent of all films were produced. With the arrival of television in the 1950s, fewer people went to see films. However, in recent years, the number of audiences has increased again. More countries have started to produce films, film-making has been influenced. In particular, there are currently many national film industries. The best title of the passage is most probably ____________ A. Silent films. B. Film producers. C. Current national film industries. D. The history of films. 12 Mark the letter A, B, C, D on your answer sheet to indicate a meaningful sentence from the words and phrases given A chemical factory /our town/ polluted/ the river/ lately/? A. A chemical factory in our town have polluted the river lately, haven’t it? B. A chemical factory in our town has polluted the river lately, didn’t it? C. A chemical factory in our town has polluted the river lately, hasn’t it? D. A chemical factory in our town polluted the river lately, hasn’t it? 13 Mark the letter A, B, C or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions. In the city, more teenager (A) have committed (B) illegal activities (C) these days (D). A. teenager B. have commited C. activities D. days 14 Mark the letter A, B, C, D on your answer sheet to indicate a meaningful sentence from the words and phrases given We/ believe/ urban transport pods/ travel/ around 30 kph. A. We believe that urban transport pods can travel at around 30 kph. B. We believe that urban transport pods can travel around 30 kph. C. We believe that urban transport pods will be travel at around 30 kph. D. We are believing that urban transport pods can travel at around 30 kph. 15 Mark the letter A, B, C or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions. Will we travelling (A) in driverless (B) and high-speed (C) cars in the next (D) ten years? A. Will we travelling B. driverless C. high-speed D. The next 16 Mark the letter A, B, C or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions. This time (A) next week, we will take (B) a test on (C) sources of (D) energy. A. take B. This time C. on D. of 17 Mark the letter A, B, C or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions. We should help the elderly and orphans because they need our hands. A. want B. need C. ought to D. might 18 Mark the letter A, B, C or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions. If we are able to collect solar energy, we will be sure to have this abundant source of power. A. limited B. necessary C. natural D. plentiful 19 Mark the letter A, B, C or D on your answer sheet to indicate the best sentence that can be made from the word cues given. Solar energy / used / in the world / many countries. A. Solar energy will be used in the world by many countries. B. Solar energy are used in the world in many countries. C. Solar energy are used in the world by many countries. D. Solar energy will be used in the world on many countries. 20 Mark the letter A, B, C or D on your answer sheet to indicate the best sentence that can be made from the word cues given. At this time next week/ students/ play/ soccer/ playground. A. At this time next week, the students will be playing soccer in the playground. B. At this time next week, the students will playing soccer in the playground. C. At this time next week, the students will play soccer in the playground. D. At this time next week, the students will be played soccer in the playground.

Các bạn viết giúp mình tự sáng tạo nha ai viết dài và hay không quá 800 từ phải được 700 đến 750 từ mình sẽ cho 30điểm

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