===TITLE=== UNIT 11: OPPOSITE MEANING :: 20 QUESTIONS ===TIMER=== 15 ===PART=== 1. VOCABULARY :: 20 :: 1 ===SECTION=== Opposite Meaning MCQ ===MCQ=== 1. I prefer using a wireless keyboard because it keeps my desk tidy. *A. having cables B. battery-powered C. electronic D. virtual Giải thích: wireless (không dây) >< having cables (có dây cáp). ===MCQ=== 2. We had a virtual meeting today instead of going to the office. A. digital *B. real C. online D. simulated Giải thích: virtual (ảo/trực tuyến) >< real (thực tế/trực tiếp). ===MCQ=== 3. This new e-reader is remarkably lightweight. A. portable B. thin *C. heavy D. small Giải thích: lightweight (nhẹ) >< heavy (nặng). ===MCQ=== 4. Spending too much time on social media can be harmful to your mental health. A. dangerous B. toxic C. bad *D. beneficial Giải thích: harmful (có hại) >< beneficial (có lợi). ===MCQ=== 5. Fortunately, the educational software did not break down during the test. *A. run smoothly B. stop working C. crash suddenly D. fail completely Giải thích: break down (bị hỏng/gặp sự cố) >< run smoothly (chạy trơn tru). ===MCQ=== 6. The rigid rules left no room for flexibility in our learning schedule. A. adaptability *B. stiffness C. easiness D. freedom Giải thích: flexibility (sự linh hoạt) >< stiffness (sự cứng nhắc). ===MCQ=== 7. The design of that old camcorder is not very stylish. A. trendy B. fashionable *C. old-fashioned D. modern Giải thích: stylish (hợp thời trang/sành điệu) >< old-fashioned (lỗi thời). ===MCQ=== 8. The teacher advised us to start doing the assignment immediately. A. instantly B. promptly C. right away *D. later Giải thích: immediately (ngay lập tức) >< later (để sau/muộn hơn). ===MCQ=== 9. You must connect your device to the network to download the leaflet. *A. disconnect B. attach C. link D. join Giải thích: connect (kết nối) >< disconnect (ngắt kết nối). ===MCQ=== 10. Our company only produces high-quality aluminium materials. A. superior *B. low-quality C. premium D. excellent Giải thích: high-quality (chất lượng cao) >< low-quality (chất lượng thấp). ===MCQ=== 11. We opened the window shade to block out the cold wind. A. keep out B. prevent *C. let in D. stop Giải thích: block out (cản lại/ngăn chặn) >< let in (để lọt vào). ===MCQ=== 12. The assistant did an excellent job helping the customers. A. wonderful B. outstanding C. great *D. terrible Giải thích: excellent (xuất sắc) >< terrible (tồi tệ). ===MCQ=== 13. Good technology can help prevent serious health problems. *A. encourage B. avoid C. stop D. block Giải thích: prevent (ngăn chặn) >< encourage (khuyến khích/thúc đẩy xảy ra). ===MCQ=== 14. The student was praised because he submitted his self-portrait on time. A. punctually *B. late C. accurately D. perfectly Giải thích: on time (đúng giờ) >< late (trễ giờ). ===MCQ=== 15. Items made of cardboard are usually not very durable. A. strong B. tough *C. fragile D. long-lasting Giải thích: durable (bền bỉ) >< fragile (mong manh/dễ vỡ). ===MCQ=== 16. A desktop computer is powerful but it is not portable. A. movable B. easy to carry C. lightweight *D. fixed Giải thích: portable (dễ mang theo/di động) >< fixed (cố định). ===MCQ=== 17. We decided to collaborate on writing the digital textbook. *A. work independently B. cooperate C. team up D. join forces Giải thích: collaborate (hợp tác) >< work independently (làm việc độc lập). ===MCQ=== 18. Maintaining privacy on social media is extremely important. A. secrecy *B. public exposure C. confidentiality D. isolation Giải thích: privacy (sự riêng tư) >< public exposure (sự phơi bày trước công chúng). ===MCQ=== 19. She used a medical thermometer to check his temperature. A. healthcare B. clinical *C. recreational D. therapeutic Giải thích: medical (thuộc về y tế/chữa bệnh) >< recreational (thuộc về giải trí). ===MCQ=== 20. I advise that you should take note of this important pattern. A. write down B. record C. jot down *D. ignore Giải thích: take note (ghi chú/lưu ý) >< ignore (phớt lờ).