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[主观题]
All the trees()last summer.
All the trees（)last summer.
A、plantes
B、are planting
C、were planted
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题目内容
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A、plantes
B、are planting
C、were planted
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更多“All the trees()last summer.”相关的问题
n rode off to a forest to see how the trees were growing.
In the aftemoon when they were about ten kilometers from their camp, It started to snow. More and more snow fell. Soon Bob could hardly see his hands before his face. He could not find the road. Bob knew there were two roads. One road went to the camp, and the other went to his house. But all was white snow. Everything was the same. How could he take his friends back to the camp？
Bob had an idea. The horses! Let the horses take them back! But what would happen if the horses took the road to his house？ That would be a trip of thirty-five kilometers in such cold weather! It was getting late. They rode on and on. At last the horses stopped. Where were they？ None of them could tell. John looked around. What was that under the tree？ It was one of their tents!
1.John and his two friends went to the forest to watch the trees in the forest.()
2.They could not f1nd their way back because there was only one road to their camp.()
3.It is clear that they wanted the horses to take them to the camp.()
4.The horses stopped because they were tired after running for along way.()
5.The story happened at night when nothing could be seen.()
A.all
B.in together
C.altogether
D.gather
The main objective of the Molecular Genealogy Research Group is to build a database containing over 100,000 DNA samples from individuals all over the world. These individuals will have provided a pedigree chart of at least four generations and a small blood sample. Once the database has enough samples to represent the world genetic make-up, it will eventually help in solving many issues regarding genealogies that could not be done by relying only on traditional written records. Theoretically, any individual will someday be able to trace his or her family origins through this database.
In the meantime, as the database is being created, molecular genealogy can already verify possible or suspected relationships between individuals. "For example, if two men sharing the same last name believe that they are related, but no written record proves this relationship, we can verify this possibility by collecting a sample of DNA from both and looking for common markers (in this case we can look primarily at the Y chromosome (染色体)," explains George Green, a member of the BYU Molecular Genealogy research team.
People in a large area may possess the same DNA thread because______.
A．DNA is characteristic of a region
B．they are beyond doubt of common ancestry
C．DNA strand has the ability to identify individuals
D．their unique identification can be provided via DNA
A．Remember all their names.
B．Remember just their last names.
C．Remember a couple of names first.
D．Remember as many names as possible.
A.group
B.family
C.match
D.team
Coal, oil, natural gas, and all other fuels are stored energy from the sun. Some was collected by this season's plants as carbon compounds. Some was stored by plants and trees ages ago. Even waterpower derives from the sun. Water turned into vapor by the sun falls as rain. It courses down the mountains and is converted to electric power. Light transmits only the energy that comes from the sun's outer layer, and much of this energy that is directed towards the earth never arrives. About nine tenths of it is absorbed by the atmosphere of the earth. In fact, the earth itself gets only one half millionth of the sun's entire output of radiant energy.
The sun is the source of all of the following EXCEPT______.
A．gasoline
B．natural gas
C．atomic power
D．animal fat
A. As a result
B. By all means
C. In contrast
D. On the contrary
A．were
B．had been
C．have been
D．was
