雅思写作考官范文

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雅思写作考官范文篇一：

The three graphs of wheat exports each show a quite different pattern between 1985 and 1990. Exports from Australia declined over the five-year period, while the Canadian market fluctuated considerably, and the European Community showed an increase.

In 1985, Australia exported about 15 millions of tonnes of wheat and the following year the number increased by one million tonnes to 16 million. After that, however, there was a gradual decline until 1989 and 1990 when it stabilised at about 11 million tonnes. Over the same period, the amount of Canadian exports varied greatly. It started at 19 million tonnes in 1985, reached a peak in 1988 of 24 million, dropped dramatically in 1989 to 14 million tonnes and then climbed back to 19 million in 1990. Seventeen million tonnes were exported from the European Community in 1985, but this decreased to 14 million tonnes in 1986 and then rose to 15 million in 1987 and 1988 before increasing once more to 20 million in 1990.

雅思写作考官范文篇二：

This diagram provides an overview of a domestic central heating system. It shows how the tank, boiler and pipes ensure a constant flow of hot waterto both the radiators and the taps.

The cold water enters the house and is stored in a water storage tank in the roof. From there ü flows down to the boiler, located on the ground floor of the house.

The boiler, which is fuelled by gas or oil, heats up the water as it passes through it. The hot water is then pumped round the house through a system of pipes and flows into the radiators, located in different rooms. The water circulates through the radiators, which have small tubes inside them to help distribute the heat, and this warms each of the rooms. Some of the water is directed to the taps to provide hot water for the house.

Once the water has been through the pipes and radiators, it is returned to the boiler to be re-heated and circulated round the house again.

雅思写作考官范文篇三：

There are four main stages in the production of plastic paper clips from this small factory. Two of these stages involve actual preparation of the clips, while the other two consist of quality control before the clips are sent out from the factory to the retailers to be sold to the public.

To begin with, molten plastic is poured into three different moulds depending on the colour required; the colours are red, blue and yellow. Once these clips emerge from the moulds a quality control machine checks them for strength. Unsatisfactory clips are rejected. In the third stage in the process the clips are stored by hand into two groups, mixed and single colours. When this stage is complete the groups are checked a second time to ensure that the colour mixtures are divided correctly into single colours and mixed colour batches. Finally, the clips are packed and dispatched to the markets.

雅思写作考官范文篇四：

The Hawaiian island chain, in the centre of the Pacific Ocean, is approximately 2,700 km in length. It is formed of volcanoes and the active ones are at the south-east tip of the archipelago, where Hawaii itself is located.

It is believed that the chain began to form nearly 80 million years ago. Each island started to evolve after an eruption on the sea floor. First, a `hot spot' existed on the ocean bed, which let out a plume of material called magma. This magma may originate as deep as 2,883km below the ocean bed. Next, further eruptions took place, which built up the volcano. Eventually, it emerged above the surface of the ocean.

Since that time, the spume of magma has remained static as the Pacific tectonic plate moves in a north-west direction across it at a speed of 7-9cm per year. As it moves, a volcano forms as it passes over the hotspot and then become inactive when it has passed it.