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Different trees are mentioned in Paragraph Two as examples to
A．set a criterion as to what are ancient trees.
B．introduce the rich species of ancient trees.
C．compare different kinds of ancient trees.
D．explain the definition of ancient trees.
答案
更多“Different trees are mentioned in Paragraph Two as examples toA．set a criterion as to what”相关的问题
第1题
Different from animals, the trees influence the earth's atmosphere by ______.
A．expelling carbon dioxide from their leaves
B．expelling oxygen from their leaves
C．directly reduce the blanket of gases
D．turning some carbon dioxide into lignin
第2题
听力原文：(A) The trees in the picture are of the same species.
(B) Different species of flowers are planted in the garden.
(C) There is a path toward the small building in distance.
(D) A garbage bin can be seen on one side of the path.
第3题
From the passage, we can conclude that ______.
A．all trees give off the same amount of water into the air
B．the larger a tree is, the less water it will give off into the air
C．different kinds of trees give off different amount of water into the air
D．trees of the same kind give off different amount of water into the air
第4题
The author's purpose in writing this passage is ______.
A．to give practical instructions for trimming a tree
B．to give a general description of trimming a tree
C．to explain how trees develop diseases
D．to discuss different methods of trimming a tree
第5题
What did the researchers learn from the second step？
A．The trees in the new forest were in different size.
B．The insects in the new forest had a different taste.
C．Tamarins could get used to the new environment.
D．Above 80% of tamarins survived.
第6题
听力原文： Forests are of great importance to our environment because they can absorb carbon dioxide and produce oxygen. They may also provide shelter and food for many different types of plants and animals. Trees are cut down for many reasons but the main reasons are to make space to build new houses and to clear land to grow grass for cows and sheep to eat, to produce dairy foods. The trees being cut down are sold and are made into paper and furniture.
Cutting down trees may have serious effects to the environment. (33)If animals' homes, which are built in and around the trees, are destroyed, many species in the world will become extinct. For example, many different types of animals in South America had disappeared before scientists could learn about them. Cutting down trees also affects the climate. When rain falls on a forest, new clouds will be created. If huge areas of trees are cut down, clouds can not form, rain does not fall and the land becomes drier and drier and finally becomes deserts. (34)And what's more, the carbon dioxide builds up and adds to the global warming which is making the earth become hotter and hotter.
(35)In recent years, to protect the forests, many European countries are planting trees faster than they are cutting them down. Many trees were planted a few years ago to replace woodland and to create forests in areas where there wasn't much wood. We can also help to save forests by reusing and recycling paper.
(34)
A．The loss of natural habitat for many species.
B．Less space for building new homes.
C．Less carbon dioxide and oxygen.
D．Reduced supply of paper and wood.
第7题
【T3】
A. OUT OF
B. RURAL
C. TO PROTECT A. WORKING【T1】______ THEIR URBAN FOREST
B. TREES TAKE POLLUTION【T2】______ THE AIR
C. BUT YOU ARE NOT IN【T3】______ AREA YOU ARE STANDING IN A BEAUTIFUL FOREST IN JAPA
N. THE AIR IS CLEAN AND SMELLS LIKE PLANTS AND FLOWERS. THERE ARE 175 DIFFERENT KINDS OF TREES, AND 60 KINDS OF BIRDS LIVE HER
E.【T4】______ YOU ARE DOWNTOWN IN THE CITY OF NARA, JAPAN, IN KASUGAYAMA FOREST, THE OLDEST URBAN FOREST IN THE WORL
D. CITIES AROUND THE WORLD ARE【T5】______ SOME URBAN FORESTS ARE PARKS, AND SOME ARE JUST STREETS WITH A LOT OF TREES. BUT ALL URBAN FORESTS HAVE MANY GOOD EFFECTS ON THE ENVIRONMENT.【T6】______ THEY ALSO STOP THE NOISE FROM HEAVY TRAFFI
C.
第8题
When we think of a whole forest with so many trees, the total must clearly be very great, even though the amounts may be different according to the kind of tree.
A tree can be seen as a kind of pump (水泵) in two ways. It is always sucking up water from the ground, which would otherwise become far more loosely made up. At the same time, it increases the humidity(湿度) of the surrounding land, which would otherwise be much drier.
Trees and forests also act as a breakwater(防水堤) against rainstorms, which, especially on hillsides, would otherwise wash away much of the topsoil, both around the trees and lower down. The rich humus(腐殖土) that forms the floor of the forests acts as a sponge(海绵). It holds far more water than the soil with little humus.
A tree sucks up water through its ______.
A．roots
B．leaves
C．trunk
D．branches
第9题
【T6】
A. OUT OF
B. RURAL
C. TO PROTECT A. WORKING【T1】______ THEIR URBAN FOREST
B. TREES TAKE POLLUTION【T2】______ THE AIR
C. BUT YOU ARE NOT IN【T3】______ AREA YOU ARE STANDING IN A BEAUTIFUL FOREST IN JAPA
N. THE AIR IS CLEAN AND SMELLS LIKE PLANTS AND FLOWERS. THERE ARE 175 DIFFERENT KINDS OF TREES, AND 60 KINDS OF BIRDS LIVE HER
E.【T4】______ YOU ARE DOWNTOWN IN THE CITY OF NARA, JAPAN, IN KASUGAYAMA FOREST, THE OLDEST URBAN FOREST IN THE WORL
D. CITIES AROUND THE WORLD ARE【T5】______ SOME URBAN FORESTS ARE PARKS, AND SOME ARE JUST STREETS WITH A LOT OF TREES. BUT ALL URBAN FORESTS HAVE MANY GOOD EFFECTS ON THE ENVIRONMENT.【T6】______ THEY ALSO STOP THE NOISE FROM HEAVY TRAFFI
C.
第10题
【T4】
A. OUT OF
B. RURAL
C. TO PROTECT A. WORKING【T1】______ THEIR URBAN FOREST
B. TREES TAKE POLLUTION【T2】______ THE AIR
C. BUT YOU ARE NOT IN【T3】______ AREA YOU ARE STANDING IN A BEAUTIFUL FOREST IN JAPA
N. THE AIR IS CLEAN AND SMELLS LIKE PLANTS AND FLOWERS. THERE ARE 175 DIFFERENT KINDS OF TREES, AND 60 KINDS OF BIRDS LIVE HER
E.【T4】______ YOU ARE DOWNTOWN IN THE CITY OF NARA, JAPAN, IN KASUGAYAMA FOREST, THE OLDEST URBAN FOREST IN THE WORL
D. CITIES AROUND THE WORLD ARE【T5】______ SOME URBAN FORESTS ARE PARKS, AND SOME ARE JUST STREETS WITH A LOT OF TREES. BUT ALL URBAN FORESTS HAVE MANY GOOD EFFECTS ON THE ENVIRONMENT.【T6】______ THEY ALSO STOP THE NOISE FROM HEAVY TRAFFI
C.
