1) Holding the microscope with one hand in the arm and the other supporting the base. a) Correct b) Wrong 2) Microscope left uncovered on a dusty desk. a) Correct b) Wrong 3) Microscope covered with a dust cover and stored on the table. a) Correct b) Wrong 4) Using rough materials to clean lenses. a) Correct b) Wrong 5) Using soft cloth to gently clean the microscope lens  a) Correct b) Wrong 6) Holding the microscope by the arm only or with one hand. a) Correct b) Wrong

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