Hai nguyên tố X và Y là 2 nguyên tố liên tiếp nhau trong bảng tuần hoàn các nguyên tố hóa học và có tổng số điện tích hạt nhân là 17. a. Xác định tên các nguyên tố X và Y b. Cho biết vị trí của 2 nguyên tố trong bảng tuần hoàn.

giúp emm với ạ ?? ??????????????

IV. Circle the odd one out (tìm từ không cùng nhóm 1. A. eleven B. twelve C. twenty D. time 2. A. where B. what C. when D. o’clock 3. A. lunch B. breakfast C. ice-cream D. dinner 4. A. evening B. morning C. afternoon D. work 5. A. go B. watch C. have D. lunch 6. A. school B. work C. bed D. ten 7. A. Monday B. Tuesday C. January D. Friday 8. A. at B. from C. to D. T.V

Biết rằng: Đa thức P(x) chia hết cho đa thức x−a khi và chỉ khi P(a)=0. Tìm các giá trị của m và n sao cho đa thức sau đồng thời chia hết cho x+2và x-1 P(x) = mx3+(m+2)x2−(−n+2)x+2n Ai giải hộ mik vs mik vote 5 sao cho!!

So sánh cấu trúc hàm và thủ tục .. help me .. cảm ơn nhiều

cho tam giác abc vuông tại a , đường cao ah . đường phân giác của góc abc cắt ac tại d và cắt ah tại e . cm tam giác abc đồng dạng

Làm dùm mk bài 2 ạ Mk đag cần gấp

The cost and benefits of global warming will vary greatly from area to area. For moderate climate change, the balance can be difficult to assess. But the larger the change in climate, the more negative the consequences will become. Global warming will probably make life harder, not easier, for most people. This is mainly because we have already built enormous infrastructure based on the climate we now have. People in some temperate zones may benefit from milder winters, more abundant rainfall, and expanding crop production zones. But people in other areas will suffer from increased heat waves, coastal erosion, rising sea level, more erratic rainfall, and droughts. The crops, natural vegetation, and domesticated and wild animals (including seafood) that sustain people in a given area may be unable to adapt to local or regional changes in climate. The ranges of diseases and insect pests that are limited by temperature may expand, if other environmental conditions are also favorable. In its summary report on the impacts of climate change, the Intergovernmental Panel on Climate Change stated, “Taken as a whole, the range of published evidence indicates that the net damage costs of climate change are likely to be significant and to increase over time.” 1. What is the man idea of the passage ? A. Reasons why low- lying areas are flooded. B. Reasons why global warming is a problem. C. Solutions to global warming. D. Enviroment pollution is real. 2. In paragraph , the word “ This” refers to ____ A. Flood in low- lying areas B. Climate change on global scale. C. Easier life as a result of global warming. D. Harder life as a result of global warming. 3. According to the passage, all of the following are the results of global warming EXPECT ______ A. Higher temperature. B. Coastal erosion. C. Increasing sea level. D. Stable rainfall. 4. Which of the following is TRUE as the result of global warming ? A. Life is mor difficult for the majority of people. B. All people benefit from global warming. C. Life is easier for most people. D. All people suffer from global warming. 5. What may happen to diseases and insect pests as a result of global warming ? A. They will not harm our planet. B. They will be under good control. C. They will increase in number. D. They will become extinct

Em hãy viết đoạn văn trình bày suy nghĩ của em về văn bản “Chiếu dời đô".

Television is one of man’s most important (30)_____ of communication. It brings pictures and sounds from around the world into millions of homes. Through television, home viewers can see and learn (31)_____ people, places and things in faraway lands. TV even takes its viewers out of this world. It brings them coverage of America’s astronauts as the astronauts explore (32)_______ space. In addition to all these things, television brings its viewers a steady stream of programmes that are (33)______ to entertain. In fact, TV providesmany (34)_____ entertainment programs than any other kind. The programmes include dramas, comedies, sports, and (35)______ pictures. 30. a. ways b. means c. ranges d. shows 31. a. at b. in c. for d. about 32. a. deep b. large c. outer d. open