An allergy is when the body’s immune system reacts to something that is usually harmless, such as pollen, dust or certain foods. Common signs include sneezing, itching and a rash. Which is given as an example of something that can cause an allergy?
Sharks have lived in the oceans for millions of years. Unlike most fish, their skeletons are made of cartilage, the same bendy material found in your nose and ears. What are shark skeletons made of?
A fire drill teaches people how to leave a building quickly and safely. During a drill, everyone should walk, not run, to the nearest exit and wait at the meeting point outside. What should people do during a fire drill?
“Unlike email, which can be read at any time, a phone call needs both people to be available at once.” What difference does the sentence describe?
The word “quarantine” comes from the Italian “quaranta giorni”, meaning forty days. In the 1300s, ships arriving in Venice during plague outbreaks had to wait forty days before passengers could come ashore. Why did ships have to wait before passengers came ashore?
“Unlike frogs, which have smooth, moist skin, toads usually have dry, bumpy skin. Toads also tend to spend more time on land.” What is the main purpose of the passage?
Medicine schedule: “Tablet A: every 12 hours. Tablet B: every 8 hours.” Both are first given at 8 a.m. At what time will both tablets next be due together?
“Medication A works within 15 minutes but lasts only 2 hours. Medication B takes an hour to work but lasts 12 hours.” A patient needs steady relief through the night. Which medication suits this need better, and why?
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