Our skin makes vitamin D when it is exposed to sunlight. Vitamin D helps the body take in calcium, which keeps bones strong. What does vitamin D help the body do?
- AFight off colds
- BTake in calcium
- CGrow more hair
- DDigest sugar
Our skin makes vitamin D when it is exposed to sunlight. Vitamin D helps the body take in calcium, which keeps bones strong. What does vitamin D help the body do?
The sign on a door reads: “Staff only. Visitors please use the main entrance on the left.” Where should visitors go?
Owls hunt mostly at night. Their large eyes help them see in dim light, and their excellent hearing lets them find mice hidden under leaves or snow. Which two features help owls hunt at night?
“The word ‘biology’ comes from two Greek words: ‘bios’, meaning life, and ‘logos’, meaning study.” What does “biology” mean, according to the passage?
The author says: “Some argue that homework is a waste of time. Yet research shows that a moderate amount of homework can improve test scores for older students.” How does the author respond to the argument against homework?
“The new staff canteen has more seats and longer opening hours. However, the prices have gone up, and some staff now bring lunch from home.” What is the most likely reason some staff bring lunch from home?
Before 1900, many people believed that diseases were caused by “bad air”. The work of scientists such as Louis Pasteur and Robert Koch showed that specific microorganisms cause specific diseases. This germ theory changed how doctors prevented and treated illness. Which choice best describes the structure of the passage?
A job ad says: “Wanted: nurse for night shifts. At least two years’ experience required. Must have a valid licence. Spanish speakers preferred.” Which applicant meets all the requirements?
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