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五、任务型阅读。〔人与自然一一自然生态〕
阅读下面短文，根据所读内容，在文章后1~9小题的空格里填入最恰当的内容。注意：第1~8题每个空格只填1个单词；第9题词数不限。
If you look down at the Namib Desert(纳米布沙漠)，you'll see something strange. There are circles in the sand with grass around them. The local people call these "fairy circles(仙女圈)". But who made them? And why?
The fairy circles are in a narrow part of the desert. Some are very big, almost 40 feet across. Some are small, about 6 feet across. And they all have grass around them. It's really amazing.
The local Himba(辛巴族)people think their ancestors made the fairy circles. But this idea isn't right according to science. So scientists start to look for the real answer. In a new study, scientists think they might know the mystery of the fairy circles—termites(白蚁). The termites live underground. But they are different from other termites. They don't build mounds.
Scientists think the termites eat the roots of the grass and make the grass die. When it rains, the water goes quickly into the soil. So there is water in these places where grass grows around.
If you think the termites are bad for the desert, you're wrong. The termites are actually making the desert greener. How? In the places where the termites live, the soil is porous(多孔的) and sandy(含沙的). So water can go through the desert easily. In this way, plants outside the circles are growing.
The termites and the fairy circles are good for the Himba people. They let their cattle, goats, and sheep eat the grass. They even use the inside of the circles to keep the animals at night.
阅读下面短文，根据所读内容，在文章后1~9小题的空格里填入最恰当的内容。注意：第1~8题每个空格只填1个单词；第9题词数不限。
If you look down at the Namib Desert(纳米布沙漠)，you'll see something strange. There are circles in the sand with grass around them. The local people call these "fairy circles(仙女圈)". But who made them? And why?
The fairy circles are in a narrow part of the desert. Some are very big, almost 40 feet across. Some are small, about 6 feet across. And they all have grass around them. It's really amazing.
The local Himba(辛巴族)people think their ancestors made the fairy circles. But this idea isn't right according to science. So scientists start to look for the real answer. In a new study, scientists think they might know the mystery of the fairy circles—termites(白蚁). The termites live underground. But they are different from other termites. They don't build mounds.
Scientists think the termites eat the roots of the grass and make the grass die. When it rains, the water goes quickly into the soil. So there is water in these places where grass grows around.
If you think the termites are bad for the desert, you're wrong. The termites are actually making the desert greener. How? In the places where the termites live, the soil is porous(多孔的) and sandy(含沙的). So water can go through the desert easily. In this way, plants outside the circles are growing.
The termites and the fairy circles are good for the Himba people. They let their cattle, goats, and sheep eat the grass. They even use the inside of the circles to keep the animals at night.
答案
五、1. strange 2. circles 3. how 4. real 5. answer
6. termites 7. good 8. through 9. They are very
useful.(答案不唯一)
6. termites 7. good 8. through 9. They are very
useful.(答案不唯一)
