| 摘要 |
The invention refers to a correction kit which can detect mistakes extremely fast, the test consisting of a set of questions with multiple answers of which only the correct ones are chosen. The kit is made up of a box (1) that has a lamp (a) mounted inside and is equipped at the top with a clear cover (b) on top of which a card (2) is positioned, on which the correct answers are marked as squares with thick borders (c) that will be projected, with the help of the light from the lamp (a), onto the test sheet (3) placed over the card (2). The test sheet contains some hatched squares (g) with shaded borders, for the correct answers, and some bordered empty squares (h) in which the correction will be made.
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