流程图写作 Process chart writing
图文结合读懂每个步骤 Process Writing – Practice 1:
How bricks are produced
The diagram illustrates the process that is used to manufacture bricks for the building industry. Summarize the information by selecting and reporting the main features and make comparisons where relevant.
Model Answer 1.
The process by which bricks are manufactured for the building industry can be outlined in seven consecutive steps.
First, clay, the raw material, has to be dug up by a digger.
Then the lumps of clay are placed on a metal grid in order to break up the big chunks of clay into much smaller areas, which fall through the metal grid onto a roller, whose motion further segregates the bits of clay.
Sand and water are added to make a homogenous mixture, which is then either formed in moulds or cut into brick-shaped pieces by means of a wire cutter.
Those fresh bricks are then kept in a drying oven for at least 24 and a maximum of 48 hours. The dried bricks are then transferred to a so-called kiln, another type of high temperature oven.
First they are kept at a moderate temperature of 200 ℃ -1300 ℃ . This process is followed by cooling down the finished bricks for 48 to 72 hours in a cooling chamber.
Once the bricks have cooled down and have become hard, they get packaged and delivered to their final destination.
Sample Answer 2:
The illustration gives information on the possible places to construct a supermarket in Garlsdon. Overall, it is clearly shown that one of the possible sites of a supermarket is in the countryside while the other in the town centre.
Firstly, it is apparent that the first site of the supermarket (S1) is located in the countryside where it is far away from the town centre and residential places. However, it is reachable by the public from the town centre and their housing areas by train and other transports on roads as there are a railway track and the main road connecting the supermarket and town centre. In addition, although it is located near to Hendon, its location is far away from Bransdon and Gransdon which have a higher population than Hindon.
Turning to the second possible site of the supermarket (S2), it is apparent that, it is situated in the centre of the town where every citizen in the town can easily access. It is fairly convenient for those living in Hindon and Gransdon as there are two ways to reach it, either by train or through the main roads. On the other hand, those from Bransdon can only visit the supermarket through the main road.
Sample Answer :
The diagram explains how recycled paper is made from old newspapers.
According to the flow chart, the recycling process consists of nine stages.
First, some newspapers is torn into small pieces and put into a bowl. Then 250ml of water is added and it is left to soak for up an hour.
Next, using an electric mixer, the mixture is beaten for about 45 seconds until a pulp is formed.
When it is ready, the pulp is poured into a shallow tray and a further 100 ml of water is added.
It is mixed together by hand. After this, a piece of mesh is used to carefully lift the pulp mixture out of the tray, allowing the water to drain.
Next, an old newspaper is opened up and the pulp mixture is placed inside.
Then, a rolling pin is used to press the paper down and force out any excess water.
Finally, the new paper is left to dry in a warm place for at least 24 hours.
The given graphs depict the life cycle of silkworm and show the silk cloth production from silkworm. As is presented in the first graph, there are 4 stages of the life cycle of a silkworm from eggs to cocoon and the silk production is done in 6 steps.
According to the first diagram, adult silkworms lay eggs in Mulberry leaves and the eggs take 10 days to produce silkworm larva. The larvae eat the leaf and take another 4 to 6 weeks to wrap them with silk threat shells to complete their third stage of life cycle. In the fourth stage of their life cycle they are converted in to cocoon and they remain like this for about 16 days to become grown moth. The moths then become adults and re-initiate the cycle.
The second graph depicts the steps required to produce silks from the cocoons. In the initial stage, the fine cocoons are selected. They are then boiled in water and unwinded to produce around 300 to 900 m long thread. The produced threads are then twisted and dyed. The weaving is the last steps which require the dyeing as well. After that the silks are produced and could be used.
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