21691 . A remarkable ecosystem teeming with biodiversity lies in the heart of the Amazon rainforest. The intricate web of life in this dense and lush environment has fascinated scientists for decades. One of the most captivating inhabitants of the Amazon is the poison dart frog, known for its vibrant colours and potent toxins. These small, brightly coloured frogs play a crucial role in the ecosystem. Their toxic skin serves as a defence mechanism, deterring potential predators. Interestingly, scientists have discovered that the frogs toxicity is linked to their diet in the wild. When raised in captivity and fed a different diet, these frogs do not develop the same level of toxicity. Despite their diminutive size, poison dart frogs have captured the attention of researchers studying chemical compounds. Some of the toxins produced by these frogs have potential applications in medicine, particularly in the development of painkillers. How might the e toxins toxins from from p poison dart frogs be applied in medicine?  
  • A. In painkiller development
  • B. In antiseptic solutions
  • C. In cancer treatment
  • D. In allergy medications
  • E. None of them
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প্রিমিয়াম প্ল্যান: ১ মাস
99 ৳
৩০ দিনের জন্য সকল লাইভ এবং আর্কাইভ মডেল টেস্ট, প্রশ্ন ব্যাংক ও লেকচার শিট সহ অ্যাপ এর প্রিমিয়াম সব এক্সেস পাবেন।
সাবস্ক্রিপশন লিংক

21692 . A remarkable ecosystem teeming with biodiversity lies in the heart of the Amazon rainforest. The intricate web of life in this dense and lush environment has fascinated scientists for decades. One of the most captivating inhabitants of the Amazon is the poison dart frog, known for its vibrant colours and potent toxins. These small, brightly coloured frogs play a crucial role in the ecosystem. Their toxic skin serves as a defence mechanism, deterring potential predators. Interestingly, scientists have discovered that the frogs toxicity is linked to their diet in the wild. When raised in captivity and fed a different diet, these frogs do not develop the same level of toxicity. Despite their diminutive size, poison dart frogs have captured the attention of researchers studying chemical compounds. Some of the toxins produced by these frogs have potential applications in medicine, particularly in the development of painkillers.   What conclusion can be drawn about the relationship between the poison dart frog's diet and its toxicity?
  • A. There is a direct link between diet and toxicity
  • B. Diet has no impact on toxicity
  • C. Toxicity increases with captivity
  • D. Toxicity is solely determined by genetics
  • E. None of them
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21693 . Find the odd word :
  • A. Furious
  • B. Irate
  • C. Placid
  • D. Vex
  • E. Enraged
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21694 . Fill in the blanks: He had written this book before_____. 
  • A. he retired
  • B. he had retired
  • C. he has retired
  • D. he relires
  • E. None of them
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21695 . What is the meaning of Ephemeral?
  • A. Lasting for a very short time
  • B. Existing throughout all of time and space
  • C. Having a profound and lasting impact
  • D. Easily forgotten or disregarded
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21696 . Choose the correctly spelled words:
  • A. suveniorre, questionnaire
  • B. suvenir, questionair
  • C. suvenir, questionaire
  • D. suvenir, questitionnaire
  • E. souvenir questionsaire
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21697 . Fill in the blanks : He does not like rock music and
  • A. I don't too
  • B. me also
  • C. neither do I
  • D. nor I
  • E. nor do I
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21698 . What are the synonyms of "Condone"?
  • A. Disregard, Despise
  • B. Support, Assist
  • C. Fake, Sham
  • D. Tolerate, Approve
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21699 . Choose the sentence with the correct subject-verb agreement :
  • A. The team of players are skilled
  • B. The team of players is skilled.
  • C. A group of geese is flying overhead.
  • D. The group of geese are flying overhead
  • E. A collection of books are on the shelf
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21700 . Identify the incorrect example of parallelism:
  • A. I like swimming, running, and reading books.
  • B. She is not only smart but also tuany.
  • C. The teacher told the students that they should study hard, be plinctual, and do their homework, regularly.
  • D. He likes hiking more than campaign
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21701 . Fill in the blanks, The ____ student was praised for demonstrating exceptional ___ in the challenging course.
  • A. diligent, diligence
  • B. lazy, laziness
  • C. intelligent, appetite
  • D. dedicated, apathy
  • E. hardworking, laziness
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21702 . Identify the sentence with the correct use of relative pronoun
  • A. The person whom I met yesterday is my cousin
  • B. The person whose I met yesterday is my cousin
  • C. The person who I met yesterday is my cousin
  • D. The person which I met yesterday is my cousin.
  • E. The person I met yesterday is my cousin.
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21703 . Select the sentence with the correct use of the past perfect tense:
  • A. They already ate when we had arrived
  • B. They already ate when we arrived
  • C. They have already eaten when we arrived
  • D. They ate already when we arrived
  • E. They had already caten when we arrived
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21704 . What is the antonym of Benevolent?
  • A. Stingy
  • B. Compassionate
  • C. Droopy
  • D. Altruistic
  • E. Benign
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21705 . Identify the sentence with the correct use of parallelism:
  • A. She enjoys hiking, swimming, and biking
  • B. She enjoys to hike, to swim, and biking
  • C. She enjoys hiking, swimming, and to ride a bike
  • D. She enjoys hike, swim, and bike
  • E. She enjoys to hike, swim, and to bike.
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