Test # 37
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1500 questions in 150 tests. Each test contains 10 questions.
Idiom of the Day
head for (someone/something/somewhere)
to aim for someone/something/somewhere, to move toward someone/something/somewhere
The tropical storm is heading for the large island.
The dog in the park was heading for the woman.
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Ice cold Adapter
Even in the chilliest water, life can thrive. This Antarctic ice fish, photographed during an Alfred Wegener Institute Polarstern mission, has no red blood cells or red blood pigments. The adaption makes the fish s blood thinner, saving energy that would otherwise be needed to pump the blood around the body.