Test # 4
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760 questions in 76 tests. Each test contains 10 questions.
Idiom of the Day
go against the grain
to go against the natural direction or inclination of something
The man's unfriendly attitude goes against the grain of the usually friendly company.
Precautions while using Laboratory Thermometers
Benefits of Durian
How Effective a Person Are You?
The Heliotrope is Germanys first eco and energy-friendly rotating house. Designed by architect Rolf Disch this is the first PlusEnergy house in the world. The architect created this house as his private residence in 1994. This house produces more energy than it uses and the energy it produces is emissions free. The house rotates to track the sunlight and harness maximum energy of the sun in the form of heat and light. This energy-efficient house is equipped with a grey-water cleansing system and inbuilt natural waste composting.