Hai ô tô khởi hành cùng một lúc từ hai tỉnh A và B cách nhau 400km, đi ngược chiều và gặp nhau sau 5 giờ. Nếu vận tốc của mỏi xe vån không đổi, nhưng xe đi chậm xuất phát trước xe kia 40 phút thì hai xe gặp nhau sau 5 giờ 22 phút kể từ lúc xe đi chậm khởi hành. Tính vận tốc của mỗi xe. Mng giúp mình giải nha

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I. Choose the most appropriate answer to complete each sentence below. (10 points) 1. Solar panels will be______ on the roof of our house next week. A. install B. installing C. installed D. installs 2. “Can I come a bit later? I won’t finish until 5.30.” - “______” A. I’m always late B. That should be fine C. That would be great D. I’m fine 3. Of my parents, my mother is______ A. the stricter B. strict C. the strictest D. stricter 4. She went to market with some friends without______ anything. A. buy B. bought C. buying D. buys 5. I usually go to work by bus, but ______ and then I use my motorbike. A. again B. once C. now D. ever 6. Nuclear energy is______ but it is dangerous. A. non- renewable B. fossil fuel C. renewable D. natural resource 7. ______ having a happy ending, the film begins with a terrible disaster. A. despite of B. although C. in spite of D. because of 8. I am sure youwill find the plot of the film ______ A. interested B. interesting C. interest D. interests 9. No one can do it well and ______ A. so can she B. neither can she C. she can’t, too D. she can, either 10. ______ she plays the guitar! A. How well B. How good C. What well D. What good 11. ______ coffee without milk is yours. A. An B.The C. A D. X 12. “______” -“ Not at all.” A. Is it OK if I sit here? B. Would it be possible for me to sit here? C. Mind if I sit here? D. Can I sit here? 13. Since when______ Mary? A. you knew B. did you know C. would you knew D. have you known 14. “ Nice to see you again” is a______ A. answer B. greeting C. goodbye D. question 15. I had to get up early, ______ I would miss the train. A. otherwise B. if not C. but D. so that