Test # 21
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1300 questions in 130 tests. Each test contains 10 questions.
Idiom of the Day
pluck up one's courage
to make oneself have courage
The young man plucked up his courage and asked the woman for a date.
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Precaution while using Microscope
Can endure stationary positions for extended periods
The human body can endure stationary positions for extended periods if it is in a neutral body posture a position that can be maintained without a concerted effort or contortions. A neutral body posture is essential to working efficiently and effectively at the microscope for long hours. Because not everyone is able to buy a new, ergonomically designed microscope or workstation, the smartest idea is to find the means to modify the microscope to fit the user rather than forcing the user into awkward positions.