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（H）
For years, humans have fought with the dandelions (蒲公英). 1. ________ For they can get in the way of the crops’ growth. They pull them up by the roots (根) or kill the plants against chemicals. But our war with the dandelions may be over soon.
2. ________ Young dandelion leaves can be made into a delicious salad. Dandelion plants have many long, thin roots, which allow water and air to mix in and keep soil healthy. Dandelion flowers also attract ladybugs (瓢虫). It is good to have ladybugs in gardens because they can eat small bad insects. However, most people still think of the dandelion as a wild and useless plant. Their thoughts need to be changed.
If you pick a dandelion, you probably notice the milky juice (汁液) that comes from the stems (茎). 3. ________ We all know that around 30 000 different products are made from rubber (橡胶) today. Most of these products are made from rubber that comes from the tree. 4. ________ For example, some people have a serious allergy (过敏) to this kind of rubber, and a fungus (真菌) is killing out many of the rubber trees on our planet.
Scientists are studying dandelion juice which can become a good source (来源) of rubber in the future. On one hand, people who are allergic to rubber products made from rubber trees are not likely to be allergic to dandelion rubber. 5. ________ When we make peace with the dandelion, we’ll plant it instead of pulling it.
A. But there are some problems with these products.
B. You can see it in the field and it looks beautiful.
C. Dandelion juice is a natural source of rubber.
D. Most people consider dandelions as terrible grass.
E. On the other hand, dandelions are easy to plant and grow quickly.
F. It’s no secret that the dandelion has its uses.
G. Dandelion rubber has advantages over the rubber from rubber trees.
For years, humans have fought with the dandelions (蒲公英). 1. ________ For they can get in the way of the crops’ growth. They pull them up by the roots (根) or kill the plants against chemicals. But our war with the dandelions may be over soon.
2. ________ Young dandelion leaves can be made into a delicious salad. Dandelion plants have many long, thin roots, which allow water and air to mix in and keep soil healthy. Dandelion flowers also attract ladybugs (瓢虫). It is good to have ladybugs in gardens because they can eat small bad insects. However, most people still think of the dandelion as a wild and useless plant. Their thoughts need to be changed.
If you pick a dandelion, you probably notice the milky juice (汁液) that comes from the stems (茎). 3. ________ We all know that around 30 000 different products are made from rubber (橡胶) today. Most of these products are made from rubber that comes from the tree. 4. ________ For example, some people have a serious allergy (过敏) to this kind of rubber, and a fungus (真菌) is killing out many of the rubber trees on our planet.
Scientists are studying dandelion juice which can become a good source (来源) of rubber in the future. On one hand, people who are allergic to rubber products made from rubber trees are not likely to be allergic to dandelion rubber. 5. ________ When we make peace with the dandelion, we’ll plant it instead of pulling it.
A. But there are some problems with these products.
B. You can see it in the field and it looks beautiful.
C. Dandelion juice is a natural source of rubber.
D. Most people consider dandelions as terrible grass.
E. On the other hand, dandelions are easy to plant and grow quickly.
F. It’s no secret that the dandelion has its uses.
G. Dandelion rubber has advantages over the rubber from rubber trees.
答案
(H) 1-5 DFCAE
