Read the article and select the best answer. Article: Grasslands need time to rest when cattle and other animals feed on them. Moving animals from one area of pasture to another can provide the time needed for new growth. This is called rotational grazing . Rotational grazing is good for the land and the animals, and it can save money. This form of grazing can reduce the need for pesticide treatments by reducing the growth of weeds. And it can limit the need for chemical fertilizers by letting animal wastes do the job of natural fertilizer. Rotational grazing can even help prevent wildfires by keeping grasslands in good condition. Letting animals feed continually and intensively in the same grazing areas can require costly replanting. Animals eat the most desirable growth first. When that keeps happening, the roots do not have enough time to recover. As a result, less desirable plants may replace them. Intensively used grasslands are also harmed as the soil is continually crushed under the weight of heavy animals. While rotational grazing can save money over time, it also requires planning. And that starts with a good map to mark fences, water supplies and grazing areas. Changing methods of grazing also requires time. Farmers may want to put up electric fences to enclose grazing areas, called paddocks. The paddocks will need water. Some farmers design a path for animals from different paddocks to drink from a common watering place. Farmers can start rotational grazing by removing animals from a pasture when the grass is eaten to less that five centimeters. The pasture is then kept empty until the grass grows to more than fifteen centimeters high. Sheep and goats may require special preparations. They may need stronger fences than other animals. And while they eat the grass, they may need guard animals to protect them from animals that would like to eat them. Question: Grasslands won't depend on chemical fertilizers when _ . Options: A: the soil of grasslands is naturally rich B: animal wastes serve as natural fertilizer C: rotational grazing can prevent wildfires D: grasslands are usually in good condition
B

Read the article and select the best answer. Article: The first field season is now over at the hut village of the workmen who built the tombs in the Valley of the Kings. However, the archaeologists working on the excavation have found that they still have a great deal to do. The sun, the wind and tourists have left their mark on the village, originally discovered by Bernard Bruyere in 1935. "From our modern perspective, it is upsetting to see how the village was first excavated and then left to be destroyed. Passers-by have used the huts as rubbish dumps and restrooms," says Jaana Toivari-Viitala, a teacher at the University of Helsinki. "Fortunately, while we still have some surface cleaning to do, conservation are off to a good start." The hut village offers rare insight into everyday life in ancient Egypt. "In the early twentieth century, archaeologists were only interested in the tombs of kings. The workmen's huts they discovered were seen as a necessary evil in the quest for the real treasures." "Now several international research groups on different excavations are examining everyday life and work in the Valley of the Kings. This seems to be a trend in archaeology right now," Toivari-Viitala says. Her research group wants to find out why the hut village was built on the slope of a mountain, halfway between the construction site and Deir-el-Medina. They are also interested in how many workers lived in the village at a time, when they lived there, and what their role was in the construction work. "Comparing the names found in the village and in Deir-el-Medina provides useful information. Judging from the construction methods, settlement in the village can be divided into two separate periods: the initial settlement and a later one." For the time being, much is up to guessing, but Toivari-Viitala believes that the coming four field seasons, three months each, will see results. "The working conditions are not nearly as difficult as I thought they would be. The cool winds in the mountains nicely _ the heat." The research group... Question: Which of the following is NOT true of the hut village according to the passage? Options: A: It has been damaged a lot. B: It can tell us a lot about ancient Egypt. C: It has attracted archaeologists' attention. D: It has a lot of real treasures somewhere in it.
D

Q: Read the article and select the best answer. Article: Scotland has long been characterized as a land of romance. It contains ruins of many ancient castles and abbeys,and there is an attractive beauty in its mountains,long deep valleys,and ribbon lakes.Each year those things attract a great number of tourists. Numerous islands line the coast.In the north are two large groups,the Orkney Islands and the Shetland Islands.Close to the west coast are the Inner and Outer Hebrides groups,and the islands of Arran and Bute. The land may be divided into three regions: the Highlands in the north,the Central Lowlands and the Southern Uplands. The Highlands are wild and picturesque . A long valley called Glenmore crosses the Highlands from southwest to northeast. In the south of the Highlands are the Grampian Mountains,highest in the British Isles. Ben Nevis,the highest peak,rises to 1,243 meters.Ben Lomond rises from the shore of Loch Lomond,Scotland's largest freshwater lake. The Central Lowlands run from southwest to northeast and the greatest length is nearly 145 kilometers.The soil here is fertile,and there are four coalfields underlying the area.In the east is Edinburgh,Scotland's historic capital city,and in the west is Glasgow. Almost 90 percent of Scotland's population live in the Lowlands. In the Southern Uplands, the hills are generally less than 600 meters high. Their rounded or flat tops are often _ with dark peat . Along the slopes are plants like grass and heather . Question: From the passage we know that _ . Options: A: Scotland's islands mainly lie in the north B: the Highlands have rich soil C: Ben Lomond is near Scotland's largest freshwater lake D: the Shetland Islands lie on the west coast of Scotland
A: C