Bài viết mô tả biểu đồ dạng hình ảnh | Writing Task 1

The first diagram shows that there are four main stages in the life of the silkworm. First of all, eggs are produced by the moth and it takes ten days for each egg to become a silkworm larva that feeds on mulberry leaves. This stage lasts for up to six weeks until the larva pro-duces a cocoon of silk thread around itself. After a period of about three weeks, the adult moths eventually emerge from these cocoons and the life cycle begins again.The cocoons are the raw material used for the production of silk cloth. Once selected, they are boiled in water and the threads can be separated in the unwinding stage. Each thread is between 300 and 900 metres long, which means they can be twisted together, dyed and then used to produce cloth in the weaving stage.

Overall, the diagrams show that the cocoon stage of the silkworm can be used to produce silk cloth through a very simple process.

The diagram demonstrates how rainwater is recycled.To begin with, rain falls upon a roof and is channelled into the guttering, where it drains into a water filtration system — commonly a net or mesh containing activated carbon, or even plain old charcoal from the barbeque. Once filtered for debris, such as leaves or dead insects, the water travels into a water storage tank, where it is held before treatment.

In the water treatment stage, the water is allowed to flow into a contained area where chemicals are added to remove any impurities. Following this, the water is deemed safe for drinking, and is returned to the water system, where it coincidentally ends up in the same house upon which the rain fell in the beginning.

Overall, the process of recycling rainwater is not only very simple and efficient, as the diagram shows, but also fundamentally important for a habitable environment.

The diagram shows plans for a smokehouse, a kind of cooking shed, wherein food can be smoked and preserved.The project requires three holes to be dug and connected through underground piping; one for an air intake, one for the fire and one for the smoke itself, which runs up into a wider area and is diffused by a loose brick flooring. The air intake and fire are covered by movable lids and a well-sealed structure is placed over the chimney.

First, food (in this case, fish) is placed in the smokehouse, then a fire is made and subse-quently covered. The air intake is now lifted, both providing oxygen to the covered fire and blowing its smoke through the piping and up into the smokehouse itself. After a certain period of time, the food is ready to be brought back inside the house, to last through the cold winters of these people.