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【单选题】
A hundred (41) years ago there were a lot of dinosaurs (恐龙) in the world. Some lived on land. Some lived in the sea. Some (42) fly. A lot of them (43) very large and some had horns (角) or long teeth (44) the monsters (怪物) in films. Most of the dinosaurs were plant-eaters, but some of them could kill (45) eat very big animals.
The world was full of dinosaurs for 135 million (百万，百万个) years. 60 million years ago, however (然而，不管怎样), they were (46) dead. (47) happened to them
Some scientists say that about 65 million years ago the world’s climate (气候) (48) cold (寒冷的，伤风) and this cold climate killed the dinosaurs.
Now we eau only see dinosaur bones (骨骼) in (49) , but we can not see a (50) dinosaur any more.
A.
were
B.
could
C.
would
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【单选题】Almost Human Scientists are racing to build the world’s first thinking robot. This is not science fiction: some say they will have made it by the year 2020. Carol Packer reports. Machines that walk, ...
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explore space.
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龙羊峡
B.
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C.
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A.
恐龙化石附近土壤中的有毒元素会渗进化石
B.
恐龙化石内还有很多相应的解毒元素
C.
这批恐龙化石都是老年恐龙，属于自然死亡
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【单选题】For a long time, men want to see whether lifeless computers can exercise judgment, make choices, give birth to ideas, and play s inteltly. At the far limit of possibility, they wish to know w...
A.
science has proved that reproductive monster machines are already existing in the world
B.
science has proved that the authors mentioned above tend to go to extremes
C.
science has not completely denied the possibility of reproductive powers of machines
D.
science is trying to prove the existence of reproductive monsters in the world
【单选题】Almost Human Scientists are racing to build the world’s first thinking robot .This is not science fiction：some say they will have made it by the year 2020.Carol Packer repots． Machines that walk，spea...
A.
Critical．
B.
Hostile
C.
Objective
D.
Enthusiastic
【单选题】患儿，男，6个月。混合喂养，未加辅食。睡眠不安，易惊多汗，二便正常。检查：未见骨骼异常。应首先考虑的是
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结核感染
B.
营养不良
C.
佝偻病初期
D.
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正常儿
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