话题如下：
The graph below shows changes in global food and oil prices between 2000 and 2011.
该线图展示2000-2011年间全球食物和石油价格变化情况。请作答。
范文推荐：
The line graph compares the average price of a barrel of oil with the food price index over a period of 11 years.
It is clear that average global prices of both oil and food rose considerably between 2000 and 2011. Furthermore, the trends for both commodities were very similar, and so a strong correlation (93.6%) is suggested.
In the year 2000, the average global oil price was close to $25 per barrel, and the food price index stood at just under 90 points. Over the following four years both prices remained relatively stable, before rising steadily between 2004 and 2007. By 2007, the average oil price had more than doubled, to nearly $60 per barrel, and food prices had risen by around 50 points.
A dramatic increase in both commodity prices was seen from 2007 to 2008, with oil prices reaching a peak of approximately $130 per barrel and the food price index rising to 220 points. However, by the beginning of 2009 the price of oil had dropped by roughly $90, and the food price index was down by about 80 points. Finally, in 2011, the average oil price rose once again, to nearly $100 per barrel, while the food price index reached its peak, at almost 240 points.
重难点词汇学习：
Furthermore
释义
adv.此外; 而且; 与此同时; 再者;
Furthermore, as Gervaise was quick to point out, Mr Scully was not a detective.
而且，正如热尔韦斯毫不犹豫地指出来的那样，斯库利先生并不是一名侦探。
I don't like her because she is too tall and furthermore she smokes too much.
我不喜欢她,因为她太高,另外她抽烟太厉害.
I don't want to go there, furthermore, I have no time to do so.
我不想去那里, 而且我也没时间去.
trends
释义
n.趋势( trend的名词复数 ); （海岸、河流、道路等的）走向; 流行; 时尚;
v.伸向( trend的第三人称单数 ); 趋向; 倾向; 使趋向;
Predicting voting trends from economic forecasts is a dodgy business.
根据对经济的预测来预言选举的走势不大可靠。
These trends only got worse as we moved into the nineties.
我们步入20世纪90年代时，这些潮流变得更糟了。
The trends since the 1950s have become even more marked.
20世纪50年代以来，这些趋势更加显而易见。
commodities
释义
n.商品( commodity的名词复数 ); 农产品; 有价值的物品; 有用的东西;
Fresh water and other commodities are in short supply.
淡水和其他商品短缺。
rice, flour and other basic commodities
稻米、面粉和其他基本商品
The prices of the commodities are quite stable this year.
今年各种物价相当稳定.
