$\lim_{x \to -1} $ $\frac{x^{2}+2x+1}{2x^{3}+2 }$ Lam ho minh voi

2 bài nha lm hết cho 5 sao và tlhn

a. Một NST có trình tự các gen phân bố: ABCDE ∙ FGH Cho biết A,B,C,D,E,F,G,H: kí hiệu các gen trên NST, (∙) Tâm động Do đột biến cấu trúc nên các gen phân bố trên NST có trình tự ABCDE ∙ FG - Xác định dạng đột biến - Nếu dạng đột biến xảy ra ở cặp NST số 21 ở người thì gây hậu quả gì? b. Phân biệt thường biến với đột biến

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Mọi người giúp mik giải bài này nhé ạ :3 How much are those books? - What is ....................................? - What is ....................................? - How much ..............................?

Vì sao khi máu lên phổi thì nhận khí O2 thải Co2 còn khi đến tế bào thì nhả O2 và nhận Co2

Cứu em vớiiiiiiii Gấppppp Cho tam giác MNK cân tại N có NM = 5cm ; MK = 6cm . Vẽ NH vuông góc với MK tại H . Góc HNM có số đo bằng 30 độ . Từ H vẽ HA vuông góc với NM tại A . Tính độ dài cạnh HA ?

viết một đoạn văn ngắn (khoảng 5 đến 7 câu) bàn về dịch covid thời điểm hiện nay có sử dụng phép liên kết

Question 1: A lot of fish has died recently because of the ………….. water in this lake. A. contaminating B. contaminated C. contaminate D. contaminant Question 2: All the aquatic plants and animals will die if the factory ………….. dumping poison into the lake. A. will keep B. to keep C. kept D. keeps Question 3: Air ……………………, together with littering, is causing many problems in our cities today A. pollute B. pollution C. polluting D. polluted Question 4: __________ pollution is harmful or annoying level of noise, as from vehicles, industry activities, etc. 4 điểm A. light B. visual C. soil D. noise Question 5: I can’t hear your voice __________ I’m wearing an earplug. A. although B. so C. however D. because Question 6: What would you do if a factory in your neighborhood __________ untreated water into the river? A. dump B. dumped C. dumping D. dumps Question 7: Could you list some non-point source __________? A. pollution B. pollutants C. polluting D. polluted Question 8: We should wear_______when you go to concerts or other loud events to reduce the effect of noise pollution. A. earphones B. earrings C. earplugs D. ear drops Question 9: Ships spill oil in oceans and rivers. This leads _________ the death of many aquatic animals and plants. A. to B. in C. from D. at Question 10: To protect the environment, we should use more _______ sources of energy as wind and solar power. A. renewable B. reused C. recycled D. reproduced Question 11: If people _______ public transport, there will be less pollution. A. use B. will use C. can use D. used Question 12: If the sea water continues to be polluted, many fish species ______ extinct. A. become B. Will become C. would become D. have become Question 13: If the air wasn’t dirty, I ________________ so much. A. wouldn’t sneeze B. sneeze C. would sneeze D. to sneeze Question 14: If there was no fresh water in the world, what (happen) ________________. A. happens B. will happen C. happened D. would happen Question 15: The water temperature in streams, rivers, oceans change is the effect of ______________. A. radioactive pollution B. thermal pollution C. light pollution D. visual pollution Complete the text with a suitable word: Visual (1)___________ has a greater impact on people than you may think. I remember when I went to a big city, I was really frightened because there were too (2)___________ advertising billboards. Then I saw a lot of power lines over my head. (3)___________ they were not dangerous, I felt unsafe and scared as I thought they might fall sown. These things prevented me from enjoying the (4)___________ view. I think that the government (5)___________ do some measures to tackle this problem. Tùy chọn 1 Question 1: A. pollute B. polluted C.pollution D. pollutant Question 2: A. many B. much C. any D. little Question 3: A. although B. because C. If D. However Question 4: A. beauty B. beautiful C. beautifully Question 5: A. can B. will C. should D. may Choose the letter A, B, C or D to complete the sentences with given words: Tùy chọn 1 Question 1: If/ people/ breath/ contaminate/ air, they/ have/ breathing problems A. If people breathed contaminated air, they had breathing problems. B. If people breathed contaminated air, they would have breathing problems. C. If people breath contaminated air, they have breathing problems. D. If people breath contaminated air, they will have breathing problems. Question 2: Many/ people/ this area/ have/ cholera/ because/ they/ drink/ untreat/ water. A. Many people in this area have cholera because they drink untreated water. B. Many people on this area have cholera because they drink untreated water. C. Many people on this area have cholera because they drink untreating water. D. Many people in this area have cholera because they drink untreating water. Question 3: The street/ not/ look/ attractive/ because/ there/ be/ a lot of/ rubbish. A. The street not look attractive because there’s a lot of rubbish. B. The street not look attractive because there’re a lot of rubbish. C. The street doesn’t look attractive because there’s a lot of rubbish. D. The street don’t look attractive because there’re a lot of rubbish. Rewrite sentences without changing the meaning: Question 1: The soil is poisoned because farmers use too many pesticides and herbicides. A. Famers use too many pesticides and herbicides, but the soil is poisoned. B. Famers use too many pesticides and herbicides, for the soil is poisoned. C. Famers use too many pesticides and herbicides, so the soil is poisoned. D. Famers use too many pesticides and herbicides, or the soil is poisoned. Question 2: People use a lot of vehicles. The air is polluted. A. If people don’t use too many vehicles, the air won’t be polluted. B. If people won’t use too many vehicles, the air don’t be polluted. C. If people wouldn’t use too many vehicles, the air didn’t be polluted. D. If people didn’t use too many vehicles, the air wouldn’t be polluted.

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