một oto chuyển động thẳng đều trên trục tọa độ ox với phương trình x= t^2 -10t + 9 . Vị trí M đổi chiều là : A. x = 16 m B. x= 9m C. x=84m D.x=-16m

Ex5: Complete the sentences with form of can, could, or be able to. 1. It's so amazing. He _________ speak five languages. 2. I looked everywhere for my glasses but I _________ find them anywhere. 3. James _________ speak Japanese when he lived in Japan, but he’s forgotten most of it now. 4. I have to go to a business dinner tomorrow night so I _________ come to the party. I am very sorry. 5. This telephone is terrible. I _________ hear you at all. 6. (you) _________ the fireworks from your house last night? 7. Do you think you _________ write that report by Tuesday? I know you’re very busy. 8. I _________ touch my toes. See! 9. I _________ spend another moment in that restaurant. It was too noisy. 10. I’m afraid I _________ attend the meeting, I’m on business in Japan.

Write the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions. Question 5: Adolescence is the period of development ________ childhood and adulthood A. for B. between C. and D. from Question 6: Your body will change in shape and________ A. height B. high C. tall D. taller Question 7: Lots of people choose to buy houses in the suburbs ___________ they can avoid the noise and pollution in the city. A. although B. when C. so that D.so as Question 8: They can’t decide where _______ first A. go B. to go C. went D. going Question 9: The two countries agreed to _____ full diplomatic relations. A. give up B. set up C. deal with D. over come Question 10: It’s difficult to _____ changes in technology. A. go with B. look through C. keep up with D. turn up Question 11: All the best theatres and restaurants are ___________ within a few minutes' walk of each other. A. situated B. laid C. seated D. stood Question 12: Would you like to live in a modern house or a(n) ___________ cottage? A. picturesque B. awful C. terrible D. bad Question 13: You don’t like playing computer games, ___________ ? A. do you B. don’t you C. are you D. aren’t you Question 14: My dad enjoys ___________ sports very much. A. watch B. to watch C. watching D. to watching Question 15: She asked me if I ___________ music. A. like B. will like C. liked D. can like Question 16: The new camera didn’t work, ___________ I took it back to the shop. A. so B. if C. such D. and Write 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. Question 17: I think parents should put themselves in their children’s shoes. A. situation B. school C. environment D. life Question 18: More men will be stay-at-home dads: looking after the children and doing housework. A. taking care of B. turning off C. going on D. taking part in Write the letter A, B, C, or D on your answer sheet to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions. Question 19: I invited her to join our trip to Trang An, but she turned down my invitation A. refused B. accepted C. returned D. rejected Question 20: Everyone is aware that it will be much safer to have elevated walkways and underpass systems for pedestrians. A. dangreous B. more dangerous C. danger D. safest

Các anh chị giúp e với e cảm ơn nhìu ak

cho các đa thức f(x)=3+3x-1+3x^4 g(x)=-x^3+x^2-x+2-x^4 tính f(x) + g(x) , f(x)-g(x)

sắp xếp theo thứ tự tăng dần rõ cách giải ra chút tan 72 , cot 10 , tan 25 , cot 81 ( cần gấp ) cảm ơn mọi người

Giải hộ mk nha! Câu 1: ở điều kiện tiêu chuẩn 0,224 lít khí Clo chứa bao nhiêu phân tử clCl2 ? Câu 2 : ở điều kiện tiêu chuẩn 24.10^22 phân tử CO2 có thể tích là?

Giúp mình câu này với và chình bầy bài này ra nhá

6. I _______ swim since I was 11. A. cannot B. could C. will not D. will 7. I am an interpreter. I _______ speak 7 different languages. A. can B. could C. will can D. can be 8. One day I _______ run a marathon, but I need to practice first. A. won’t B. could C. can D. will be able to 9. _______ when you were 10? A. You could swim B. Could you swim C. Could swim D. Will you be able to swim 10. We _______ get to the meeting on time yesterday, because the train was delayed by one hour. A. couldn’t not B. cannot C. couldn’t D. will be able to

Ex4: Complete the sentences with can, could, or be able to. 1. I’m right-handed. I _______ write with my left hand. A. could B. can C. can’t D. won’t be able to 2. _______ you usually remember your dreams? A. Can B. can’t C. cannot D. could 3. People used to think that witches _______ do magic. A. will be able to B. could C. won’t be able to D. can 4. When I was young, I _______ eat anything I liked, I never got fat. A. can B. cannot C. will be able to D. could 5. _______ come to the pub tonight? A. Will you be able to B. Won’t be able to C. Could you D. Can you