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yn34382
2 năm trước
Cho mình 3 hình ảnh thực tế của 3 loại chùm sáng : song song, phân kì, hội tụ (tức là mỗi loại đưa ra một hình ảnh ví dụ thực tế; chùm sáng song song : 1 hình ảnh; chùm sáng phân kì : 1 hình ảnh; chùm sang hội tụ một hình ảnh) Lưu ý : không lấy hình trong sgk
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Question 1: It's raining.........we can't go out. A. So B. but C. however D.because Question 2: You have seen this film before,....? A. haven't you B.didn't you C.don't you D.have you Question 3: I wish I......fly a plane. A. can B. were C.will be able to D.could Question 4: If it rains tomorrow, we......the trip A. cancel B. will cancel C.would cancel D.canceled Question 5: There is a football match.....2 p.m. and 4 p.m. A. between B. at C.from D.on Question 6: The children are watching a very.....program on TV. A. interested B. interesting C.bored D.excited Question 7: Mrs. Thomson asked her son where....the next day A. will he go B. would he go C. he would go D.he will go Question 8: "Honey, the weather is very bad today. You should drive,....."Henry D. careless student. A. careful B.carefully C.carelessly D.careless Question 9: Mary used to.......up early when she was a student A. get B.getting C.got D.gets Question 10: Nguyen Du is consedered a famous Vietnamese....... A. poetry B.poem C.poets D.poet Question 11: They often go to that......to pray A. market B.hotel C.hostel D.shrine Question 12: We have some .......students for the program. A. exchange B.exchanged C. to exchange D. exchanging Question 13: Are you a stamp.....?? A. collecting B. Collector C.collect D.collecting Question 14: Environmental pollution can be caused by .......... events such as volcanoes and forest fires but it largely occurs due to the pollutants caused by human activities. A. nature B. natural C. naturally D. naturalize Question 15: New Zealanders represent a mix of Europeans and the Maoris. They are very ...... and hospitable A.friend B.friendly C.friendliness D.friendship Question 16: When turned up, the town hall was already.......of teenagers. A.full B.packed C.crowded D.jammed Question 17: She turned.......the new job in New York because she didn't want to move. A.on B.down C.off D.up Question 18: You may feel......before taking an important exam A. tense B.stressed C.surprise D.worried Question 19: You are asked to fix a broken bicycle chain and you are not sure what to do. You may feel....... A. confused B. frustrated C. happy D.embarrassed Question 20: Cattle and sheep are gazing in the................. A. bridges B. rivers C.fields D. meadows

1. Bi let Ba keep the kitten yesterday -> Bi allowed... 2. The teacher didn't let the class leave before 4:30 -> The class... 3. I haven't heard from him for ages -> He... 4. The beach is quite near the hotel -> The beach is within... 5. John prefers windsurfing to sailing -> John would... 6. I haven't seen a play by Shakespeare for more than 10 years -> It's... 7. When we crossed the fields, we couldn't see the mountain because of the rain -> If... 8. I was going to leave, but because of what she said, I didn't -> She persuaded... 9. I didn't want to buy it, but because he insisted, I didn't -> He pushed... 10. "You must think about it carefully before you decide", she told me -> She urged... 11. "I am innocent" she said, and the court believe her -> She convinced... 12. She says that it's good if I make my own decisions -> She encourages... 13. Please check for damage before signing the delivery note -> Don't sign... 14. I need an early night -> I could...

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