Title Đề thi HK1 - Anh 12 - THPT Chương trình mới - Đề 06 - có lời giải.pdf ✅

http://tailieugiangday.com – Website đề thi – chuyên đề file word có lời giải chi tiết Trang 2 Question 18: A. report B. result. C. record D. review Read the passage and choose the best answer (A, B, C or D) to complete each question. Humans have struggled against weeds since the beginning of agriculture. The global need for weed control has been answered mainly by the chemical industry. Its herbicides are effective and sometimes necessary, but some pose serious problems, particularly if misused. Toxic compounds threaten animals and public health when they are present in food plant, ground water, and drinking water. They also harm workers who apply them. In recent years the chemical industry has introduced several herbicides that are more ecologically sound. Yet new chemicals alone cannot solve the world‟s weed problems. Therefore, scientists are exploring the innate weed-killing powers of living organisms, primarily insects and microorganisms. The biological agents now in use are harmless to humans, environmentally friendly, and offer the benefit of specificity. They can be chosen for their ability to attack selected targets and leave crops and other plants untouched. In contrast, some of the most effective chemicals kill almost all the plants they come in contact with, sparing only those that are naturally resistant to those that have been genetically modified for resistance. Furthermore, a number of biological agents can be administered only once, after that no added applications are needed. Chemicals, typically, must be used several times per growing season. Question 19: What is the passage primarily about? A. The importance of the chemical industry B. The dangers of toxic chemicals C. A suggestion to ban the use of all herbicides. D. Advantages of biological agents over chemical ones Question 20: According to the passage, biological agents usually consist of . A. weeds B. insects and microorganisms C. various types of mammals D. food plants Question 21: Which of the following is NOT given as an advantage of using biological agents over chemical herbicides? A. They are less likely to destroy desirable plants. B. They are safer for workers. C. They are more easily available. D. They do not have to be used as often. Question 22: The word „toxic‟ in line 3 means . A. poisonous B. useless C. useful D. harmless Make meaningful sentences, using the prompts and words in brackets. Question 23: city buses/ taxis/ use/ noise reduction devices/ run/ environmentally friendly/ fuels. (and) =>.................................................................................................................................. Question 24: green technology/ use renewable resources/ create/ eco-friendly/ products. (which) =>.................................................................................................................................. Question 25: burning/ fossil fuels/ emit/ harmful gases/ people/ still/ use/ heating/ cooking. (but) =>.................................................................................................................................. 7. Rewrite the following sentences beginning with the cues given. Question 26: We should not waste paper. We should not cut down any trees either. (neither .... nor) =>............................................................................................................................ Question 27: The light had gone out before we got out of the office. =>When..................................................................................................................................... Question 28: We reuse bags, old clothes and scrap paper at home. We can reduce waste. (so that) =>........................................................................................................................... ... Question 29: Mould and mildew can cause health problems. We need to remove any growth regularly. (compound sentences)