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January 16, 2014 – We know the saying “The early bird gets the worm”, but today you’re going to  learn about the interesting saying “The early fish gets the bird.” An African tigerfish(老虎鱼) was seen jumping out of the air and catching a flying bird. The African tigerfish has bright red fins and very sharp teeth. There have been rumors(传闻) this kind of fish preys on(捕食) birds since the 1940s, but no one was able to catch one . 'The whole action of jumping and catching happens so quickly that after we saw it, it took all of us a moment to really understand what we had just seen,' said Nico Smit from Environmental Sciences and Management at North-West University. Smit and his research team saw it at a lake in the Mapungubwe National Park in South Africa during summer. They found about 20 fish feeding on birds in the morning. Those birds may be out early to look for food, but we will never know for sure! 小题1:The tigherfish ___________. A.is from the USA B.has bright black fins C.has very sharp teeth D.was seen in a forest 小题2:The underlined word “one” in Paragraph 2 means _______. A. a tiger B.a fish C.a bird D.a person 小题3:Which of the following is true according to the passage? A.Nobody has heard of the rumors about the tigerfish before. B.It took Smit a moment to understand what he had seen about the fish. C.The interesting findings happened in a lake in the afternoon. D.The birds were caught by the tigerfish because they were out too early for food. 小题4:Where is the passage likely to be read? A.In a poster. B.In a tour guide. C.In a newspaper. D.In a story book. 小题5:Which is the best title for the passage? A.The early fish gets the bird. B.Nico Smit and an African tigerfish. C.Nico Smit and his research team. D.The Mapungubwe National Park
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【简答题】27×5.4+4.6的简便算法是:3.27×(5.4+4.6).______. (判断对错)
【单选题】小篆以前的文字统称为( )
A.
今文字
B.
金文
C.
大篆
D.
古文字
【单选题】目前应用最广泛的公开密钥的算法是()。
A.
DES算法
B.
RSA算法
C.
IDEA算法
D.
RS4算法
【单选题】物联网体系架构中,应用层相当于人的()
A.
大脑
B.
皮肤
C.
社会分工
D.
神经中枢
【判断题】闪光对焊可以用于现浇钢筋砼结构构件内竖向或斜向钢筋焊接接长。( )( )
A.
正确
B.
错误
【简答题】近视眼的原因多数是由于()过长,远处物体发出的平行光线聚焦在视网膜的前方。
【单选题】物联网体系架构中,应用层相当于人的 ( )。
A.
大脑
B.
皮肤
C.
神经中枢
D.
细胞
【判断题】建筑装饰工程预算与力学结构知识有关。
A.
正确
B.
错误
【单选题】()可以用于现浇钢筋砼结构构件内竖向或斜向钢筋焊接接长。
A.
闪光对焊
B.
电弧焊
C.
电渣压力焊
D.
电阻点焊
【单选题】小篆以前的文字统称为( )
A.
今文字
B.
金文
C.
大篆
D.
古文字
E.
隶书
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