Có ai chỉ mình cách tính số liên kết pi của peptit không? ví dụ alanin, axit glutamic ? CHÂN THÀNH CẢM ƠN VÀ MÌNH SINH TẶNG 20 ĐIỂM

part N :))))))))))))))))))))))))))))))))))))))

1)……………..call for the ………………of the countryside.( conserve ) 2) People must learn about keeping the environment ………………(pollute) 3) It was very ……of you to leave the medicine where the children could get it.(care) 4) Environmental groups want a total…..on the dumping of nuclear waste.( prohibit) 5) I am ……………..that people have spoiled this area.(disappoint) 6) They are meeting to find ways to protect the forests from……………(forest). 7) The……….of computers is one of the recent……in our time (invent-achieve) 8) The ………….to the problem will be difficult to find.( solve) 9) The news has caused …………………among scientists.( excite) 10) Thanks a lot for your…………….help. (value) 11) Rain will reach……………………areas at the end of this week.(coast) 12) Many ………………walked around the tourist attraction to take photos.(sight) 13) Thanks to …….conservationists, many kinds of plants and animals are protected. ( enthusiasm) 14) It is……………….that some people poach fish in the Nhieu Loc Canal.(disappoint) 15) We are worried that rivers and canals are becoming more and more ……( pollute) 16) The……………were disappointed that people had spoiled the area. (environmental) 17) In order to keep our environment………..…, we shouldn’t drop litter in public places (pollute) 18) Don’t pump……………. into seas and rivers or it will pollute them (sew) 19) If we keep on... the air, more people will suffer from respiratory diseases (pollution) 20) The local authorities have received many letters of………. about the industrial wastes from that factory (complain)

I. Read the passage and tick (ü) True or False. (1ps) David lives in the countryside in Canada. He usually gets up early and does morning exercise with his bike. He rides around his area. After breakfast, he takes a bus to school. He has lessons from 9.00 am to 1.00 pm. He often has lunch in the school canteen and then he has a short rest. In the afternoon, he has lessons in the library or PE in the gym. After school, he often goes to the sports centre near his house and plays basketball or table tennis. In the evening, he often does his homework. Sometimes he surfs the Internet for his school projects. He often goes to bed early. Statements True False 1. David lives in the countryside in Canada. 2. He often rides a bike in the morning. 3. His classes start at 1 o’clock in the afternoon. 4. In the afternoon, he continues with his lessons at school. 5. He plays basketball or table tennis in the school gym.

giúp em với câu 21,22 thui cam on cac pac

Trên lông dưới lông, tối lòng làm một là cái gì? Help với mng

II. Read the following passage and answer the questions. (2.0m) There are two main kinds of sports: team sports and individual sports. Team sports are such sports as baseball, basketball and volleyball. Team sports require two separate teams. The teams play against each other. They compete against each other because they want to get the best score. For example, in a football game, if team A scores 4 goals and team B scores 3 goals, team A wins the game. Team sports are sometimes called competitive sports. 1. Are there three main kinds of sports?-> …………………………………….. 2. How many teams do team sports require? -> …………………………………………………………………………………….. 3. Why do two separate teams compete against each other? -> …………………………………………………………………………………….. 4. Are team sports sometimes called competitive sports?-> ……………………………..

Tìm x: $\sqrt[]{x-3}$ -2$\sqrt[]{x^2-9}$ =0 Tìm y:$\sqrt[]{4y-20}$ +$\sqrt[]{y-5}$ -1/3$\sqrt[]{9y-45}$=4

1)……………..call for the ………………of the countryside.( conserve ) 2) People must learn about keeping the environment ………………(pollute) 3) It was very ……of you to leave the medicine where the children could get it.(care) 4) Environmental groups want a total…..on the dumping of nuclear waste.( prohibit) 5) I am ……………..that people have spoiled this area.(disappoint) 6) They are meeting to find ways to protect the forests from……………(forest). 7) The……….of computers is one of the recent……in our time (invent-achieve) 8) The ………….to the problem will be difficult to find.( solve) 9) The news has caused …………………among scientists.( excite) 10) Thanks a lot for your…………….help. (value) 11) Rain will reach……………………areas at the end of this week.(coast) 12) Many ………………walked around the tourist attraction to take photos.(sight) 13) Thanks to …….conservationists, many kinds of plants and animals are protected. ( enthusiasm) 14) It is……………….that some people poach fish in the Nhieu Loc Canal.(disappoint) 15) We are worried that rivers and canals are becoming more and more ……( pollute) 16) The……………were disappointed that people had spoiled the area. (environmental) 17) In order to keep our environment………..…, we shouldn’t drop litter in public places (pollute) 18) Don’t pump……………. into seas and rivers or it will pollute them (sew) 19) If we keep on... the air, more people will suffer from respiratory diseases (pollution) 20) The local authorities have received many letters of………. about the industrial wastes from that factory (complain)

Một em bé có bộ 6 thẻ chữ, trên mỗi thẻ có ghi một chữ cái, trong đó có 3 thẻ chữ T, một thẻ chữ N, một thẻ chữ H và một thẻ chữ P. Em bé đó xếp ngẫu nhiên 6 thẻ đó thành một hàng ngang. Tính xác suất em bé xếp được thành dãy TNTHPT. A: $\frac{1}{120}$ B: $\frac{1}{720}$ C: $\frac{1}{6}$ D: $\frac{1}{20}$