Kiến thức: Liên từ
Giải thích:
A. and: và B. so: vì vậy
C. because: bởi vì D. but: nhưng
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Chọn C
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The light had gone out before we got out of the office.
=> When.................................................................................................………………………………
Read the passage and choose the best option (A, B, C or D) to complete each gap.
In the home a dad is very important. He is the person who provides us with money to feed and clothes ourselves. He can decorate your bedroom, mend your radio, make cages for your pets, repair a puncture in your bicycle tyre and help you with maths homework. A dad can be very useful for (15) ______ you in the car to and from parties, music and dancing lessons. A dad is the person whom you ask for pocket money. He is the one who (16) ______ about the time you spend talking on the phone, as he has to pay for the bills. Dad is someone who will support you in a(n) (17) ______ , if he believes you to be right. He is someone who reads your school (18) ______ and treats if it is good. A dad likes to come into a nice happy home evening, and settle back in his chair with a newspaper.
We reuse bags, old clothes and scrap paper at home. We can reduce waste. (so that)
=> ...…………………………………………………………………………………………………………
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.
What is the passage primarily about?
We should not waste paper. We should not cut down any trees either. (neither …. nor) =>……………………….……………………………………………………………………………………
green technology/ use renewable resources/ create/ eco-friendly/ products. (which)
=> ……………………………………………………………………………………………........................
Mould and mildew can cause health problems. We need to remove any growth regularly. (compound sentences)
=> ...…………………………………………………………………………………………………………
city buses/ taxis/ use/ noise reduction devices/ run/ environmentally friendly/ fuels. (and)
=> ……………………………………………………………………………………………........................