四、信息还原。
阅读下面短文，选出可以填入空白处的最佳选项。其中有两项为多余选项。
China has many kinds of soils, and each type has its own features and uses. Different soils are found in different parts of the country because of climate, weather and land conditions.
Black soil Black soil is known as the "panda of farmland". It has many dead plants and animals that have turned into rich nutrients (营养物). 1. The soil is also like a sponge and can hold water well, giving plants enough to drink. Heilongjiang is known as China's "grain barn(粮仓)" thanks to its black soil. Black soil covers more than half of the fields in Heilongjiang.
Green soil You can mostly find green soil in southern China, where the weather is warm and rainy. 2. It's very suitable for growing rice. Farmers like this kind of soil because rice grows well and produces a good harvest.
Red soil In places like Jiangxi, Hunan and Yunnan, the soil is often red. 3. It is not rich. People often plant tea trees, oranges and bamboo there. They can grow well in this special soil.
Yellow soil The Loess Plateau(黄土高原) is located in northern China. It has the world's largest and thickest loess. 4. But it's good for growing herbs and other useful plants.
White soil 5. Most crops cannot grow well in this soil, so people choose special plants that can live in salty conditions. Poplar trees(白杨树) grow well here. These trees make the land green, protect the environment and stop the soil from being blown away by strong winds.

1. B 根据“It has many dead plants and animals that have turned into rich nutrients.”可知,黑土富含营养,这些营养能帮助谷物生长得更快更好。
2. A 根据前文“You can mostly find green soil in southern China, where the weather is warm and rainy.”可知,绿土主要分布在温暖多雨的中国南方,这种土壤长期处于水中,适合种植水稻。
3. C 根据前文“In places like Jiangxi, Hunan and Yunnan, the soil is often red.”可知,红土的红色来自土壤中的铁元素。
4. D 根据前文“The Loess Plateau is located in northern China. It has the world's largest and thickest loess.”以及后文“But it's good for growing herbs and other useful plants.”可知,黄土高原气候干燥,土壤贫瘠,但适合种植草药等植物。
5. F 根据后文“Most crops cannot grow well in this soil, so people choose special plants that can live in salty conditions.”可知,白土含盐量高,主要分布在中国北方或海边。