Thursday, March 21, 2019

A1.2-Reading-Test 21

Read the following passage and choose the best answers.

Hexagonal Honeycomb Cells

Painting Faces Made of Food
Imagine a honeycomb. It has hundreds of small cells. What shape is each cell? Is it a circle, square, hexagon, or octagon? A honeycomb cell has six sides, so it is a hexagon. Honeybees lay eggs inside these hexagonal cells and store their honey in them. But why are all honeycomb cells shaped the same?
First, a hexagonal shape saves more space than other shapes. What if bees built their honeycomb cells with circular shapes? There would be gaps between the circles. A hexagonal shape doesn’t leave gaps and therefore saves space.
What about a triangular or square shape? Both of these fit together without gaps. But more wax is needed to make them. A hexagonal shape uses less wax.
Hexagonal shapes can sit safely and tightly against each other. This makes the honeycomb structure very strong. So it rarely breaks. Smart honeybees know that the hexagonal shape is perfect for them. It makes good use of space and material. It also strengthens the honeycomb so that honey can be safely stored.

reading test

1. What is the main idea of this passage?
2. A hexagon has _____ sides.
3. Which is NOT a use of honeycombs?
4. Which shape leaves gaps?
5. The structure of honeycombs with hexagonal cells is very _____ .

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