===TITLE=== UNIT 10: SENTENCE COMPLETION :: 20 QUESTIONS ===TIMER=== 20 ===PART=== 1. GRAMMAR :: 20 :: 1 ===SECTION=== Sentence Completion (Non-defining Relative Clauses) ===MCQ=== 1. The Sun, ____________, provides essential light and heat for the entire solar system. *A. which is a giant star B. that is a giant star C. who is a giant star D. which it is a giant star Giải thích: Mệnh đề không xác định bổ sung ý nghĩa cho “The Sun”. Dùng “which” (không dùng that sau dấu phẩy). Bỏ “it”. ===MCQ=== 2. Mr. Clark, ____________, is organizing a campaign to save endangered species. A. that teaches at the science club *B. who teaches at the science club C. which teaches at the science club D. teaches at the science club Giải thích: “Mr. Clark” chỉ người -> dùng “who”. Không dùng “that” sau dấu phẩy. ===MCQ=== 3. The fresh water in this lake, ____________, is being threatened by severe pollution. A. that we use for drinking B. which we use it for drinking *C. which we use for drinking D. who we use for drinking Giải thích: “fresh water” chỉ vật -> dùng “which”. Lược bỏ “it” vì “which” đã đóng vai trò tân ngữ. ===MCQ=== 4. My grandfather, ____________, always tells me to appreciate the natural environment. A. who farm is in the valley B. that has a farm in the valley C. which farm is in the valley *D. whose farm is in the valley Giải thích: Thể hiện sự sở hữu “trang trại của ông tôi”. Dùng “whose farm”. ===MCQ=== 5. The polar region, ____________, is losing its ice due to rapid global warming. *A. which is located at the extreme ends of the Earth B. that is located at the extreme ends of the Earth C. where is located at the extreme ends of the Earth D. which it is located at the extreme ends of the Earth Giải thích: Mệnh đề bổ ngữ cho nơi chốn đóng vai trò CHỦ NGỮ (“is located”) -> Dùng “which”, không dùng “where” làm chủ ngữ. ===MCQ=== 6. Zebras and giraffes, ____________, are losing their homes because of habitat loss. A. that live in the African grassland *B. which live in the African grassland C. who live in the African grassland D. live in the African grassland Giải thích: Động vật dùng đại từ “which” (đôi khi có thể dùng “who” cho thú cưng, nhưng động vật hoang dã tiêu chuẩn là “which”). Không dùng “that” sau dấu phẩy. ===MCQ=== 7. The ecological balance, ____________, is disrupted when humans cut down too many trees. A. that is crucial for nature B. who is crucial for nature *C. which is crucial for nature D. is crucial for nature Giải thích: “The ecological balance” chỉ khái niệm -> Dùng “which”. ===MCQ=== 8. The Mediterranean Sea, ____________, attracts millions of holidaymakers every year. A. that has a gorgeous coastline B. which it has a gorgeous coastline C. who has a gorgeous coastline *D. which has a gorgeous coastline Giải thích: “The Mediterranean Sea” chỉ địa danh -> Dùng “which”, bỏ “it”. ===MCQ=== 9. Our science teacher, ____________, persuaded us to make a contribution to the charity. *A. whose passion is geology B. who passion is geology C. that passion is geology D. which passion is geology Giải thích: Thể hiện sở hữu “niềm đam mê của giáo viên”. Dùng “whose passion”. ===MCQ=== 10. The planet Earth, ____________, must be saved from the devastating effects of climate change. A. that supports all living humans *B. which supports all living humans C. who supports all living humans D. supports all living humans Giải thích: “The planet Earth” chỉ sự vật/hành tinh -> Dùng “which”. ===MCQ=== 11. A nature reserve, ____________, helps maintain the diverse flora and fauna of a region. A. that is strictly protected by the government B. who is strictly protected by the government *C. which is strictly protected by the government D. which it is strictly protected by the government Giải thích: “A nature reserve” chỉ sự vật. Câu giả định nói về khái niệm chung có dấu phẩy -> Dùng “which”, bỏ “it”. ===MCQ=== 12. The food chain, ____________, shows how energy is transferred from plants to large predators. A. that is a basic concept in biology B. who is a basic concept in biology C. is a basic concept in biology *D. which is a basic concept in biology Giải thích: “The food chain” chỉ sự vật/khái niệm -> Dùng “which”. ===MCQ=== 13. Pesticides, ____________, can have a highly toxic effect on both insects and the soil. *A. which are heavily used in modern agriculture B. that are heavily used in modern agriculture C. who are heavily used in modern agriculture D. which they are heavily used in modern agriculture Giải thích: “Pesticides” chỉ vật. Dùng “which” và lược bỏ “they”. ===MCQ=== 14. Venus, ____________, is completely covered in thick clouds and has no liquid water. A. that is the second planet from the Sun *B. which is the second planet from the Sun C. who is the second planet from the Sun D. is the second planet from the Sun Giải thích: “Venus” là danh từ riêng -> Dùng “which”. ===MCQ=== 15. The beaver, ____________, creates ponds that benefit various other water-loving animals. A. that builds dams out of wood B. who builds dams out of wood *C. which builds dams out of wood D. which it builds dams out of wood Giải thích: “The beaver” (con hải ly) chỉ động vật -> Dùng “which”. ===MCQ=== 16. Moonquakes, ____________, prove that our moon is still geologically active deep inside. A. that occur beneath the lunar surface B. who occur beneath the lunar surface C. occur beneath the lunar surface *D. which occur beneath the lunar surface Giải thích: “Moonquakes” (động đất trên mặt trăng) chỉ hiện tượng/vật -> Dùng “which”. ===MCQ=== 17. The new rocket, ____________, was launched into outer space to explore distant landforms. *A. which costs billions of dollars B. that costs billions of dollars C. who costs billions of dollars D. costs billions of dollars Giải thích: “The new rocket” chỉ vật. Mệnh đề có dấu phẩy -> Dùng “which”. ===MCQ=== 18. Our livestock, ____________, require a vast amount of fresh water and healthy feed to survive. A. that we raise on the continent *B. which we raise on the continent C. who we raise on the continent D. which we raise them on the continent Giải thích: “livestock” (gia súc) chỉ động vật. Dùng “which” làm tân ngữ cho “raise”, lược bỏ “them” (D sai). ===MCQ=== 19. Climate change, ____________, is a complex problem that requires all nations to work together. A. that threatens the survival of many species B. who threatens the survival of many species *C. which threatens the survival of many species D. threatens the survival of many species Giải thích: “Climate change” chỉ khái niệm duy nhất -> Dùng “which”. ===MCQ=== 20. Mr. Thomas, ____________, successfully persuaded the town to stop destroying the bamboo forest. A. that is an expert in environmental science B. which is an expert in environmental science C. is an expert in environmental science *D. who is an expert in environmental science Giải thích: Tên riêng “Mr. Thomas” chỉ người -> Dùng “who”.