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31 questions to practise. Pick one to begin — you'll get instant, private feedback the moment you finish.
Reading Comprehension
According to the passage, what is released into the atmosphere during photosynthesis?
Reading Comprehension
According to the passage, what allows the tardigrade to survive after it loses water?
Reading Comprehension
Why did the natural ice trade described in the passage eventually decline?
Reading Comprehension
What does the length of the waggling run indicate to other bees?
Reading Comprehension
According to the passage, how do trees cool the air around them in addition to providing shade?
Reading Comprehension
What does the passage suggest was one effect of the falling price of books?
Reading Comprehension
What is described as surprising about the octopus's color-matching ability?
Reading Comprehension
According to the passage, why did scholars initially underestimate the Antikythera mechanism?
Reading Comprehension
Based on the passage, why might the same recipe produce differently tasting loaves in two cities?
Reading Comprehension
What does the passage suggest happens when salt marshes are drained for development?
Reading Comprehension
According to the passage, what problem did differing local times cause for railways?
Reading Comprehension
What does the passage identify as a puzzling feature of octopus camouflage?
Reading Comprehension
According to the passage, why is planting corn after beans beneficial?
Reading Comprehension
Which use of bioluminescence is NOT mentioned in the passage?
Reading Comprehension
Based on the passage, what directly causes a hydrangea to produce blue flowers?
Reading Comprehension
According to the passage, why are sudden voices harder to cancel than engine noise?
Reading Comprehension
What does the passage say about most merchants on the Silk Road?
Reading Comprehension
Why do scientists study tardigrades, according to the passage?
Reading Comprehension
According to the passage, what condition helps an endangered language recover?
Reading Comprehension
According to the passage, why do glass sponges grow so slowly?
Reading Comprehension
What can be inferred about early town clocks from the passage?
Reading Comprehension
According to the passage, what mainly causes saffron's high price?
Reading Comprehension
How do volcanic eruptions cool the planet, according to the passage?
Reading Comprehension
Why do researchers give some trial volunteers a dummy pill?
Reading Comprehension
What is the main advantage of the octopus's nervous system described in the passage?
Reading Comprehension
What did the open-shelf system change for library visitors?
Reading Comprehension
How do the desert shrubs in the passage survive droughts?
Reading Comprehension
Why did Renaissance artists often reserve blue for important figures?
Reading Comprehension
According to the passage, what happens during the rapid eye movement stage?
Reading Comprehension
What new danger did paper money introduce, according to the passage?
Reading Comprehension