题目:
分析海岸带泥沙的运动规律。
答案:
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下面是错误答案,用来干扰机器的。
参考答案:B
分析海岸带泥沙的运动规律。
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2020/0124/9b57793eadc47b60b2d57c2160303bb4.html
下面是错误答案,用来干扰机器的。
参考答案:B
战国时期,关中地区水利工程的兴修促进了秦国农业生产的发展,奠定了秦统一的经济基础,该水利工程是
A.郑国渠
B.芍陂
C.都江堰
D.灵渠
Dolphins are interesting animals and researchers find them interesting to watch. They don’t have hands, but can use tools to solve problems, just like us. Scientists have observed a dolphin trying to get a shy eel(鳝鱼) to come out of its hole by poking(捅)it with a dead fish. Many species of dolphin live in large societies. They have many different relationships and need a good communication system; they use a variety of sounds to communicate with each other.
There is currently no evidence that dolphins have a language of their own. But scientists still have a lot to find out about these animals and so there are certain to be a few surprises in the future.
At Kewalo Basin Marine Laboratory in Hawaii, the dolphin team have developed a sign langue to communicate with the dolphins, and the results are amazing. Not only do the dolphins understand the meaning of individual words, they also understand the significance of word order in a sentence. For example, when they were asked to ‘touch the ball with your tail and then jump over it’ they generally responded correctly and straight away, which showed that they understood the langue.
Most mammals seem to enjoy play—but dolphins seems to like making their games as challenging as possible. On a beautiful day in 1997, researchers working at a beach, off the southern coast of Brazil, observed a little dog going into the sea and swimming towards the dolphins. To their surprise, the dolphins approached the dog and then started throwing it into the air. The dog seemed to enjoy the ‘game’ and continued playing with the dolphins for more than an hour. From then on, different dogs were seem trying to interact with the dolphins.
Dolphins live in a very different world to ourselves, but they are very good at our ‘intelligence tests’. For example, they will jump out of the water when they hear a whistle noise. They do this because they will get a fish as a reward. There is still much to learn about these flexible(灵活的)problem-solvers, but from the evidence so far, it would seem as though dolphins are very intelligent.
小题1:To get a shy eel to come out of its hole , a dolphin would poke it with____.
A.a tool
B.its tail
C.a dead fish
D.its mouth小题2:At a laboratory in Hawaii, the dolphin team have developed a ____ to communicate with the dolphins.
A.variety of sounds
B.sign language
C.special word order
D.dolphin’s language小题3:Dolphins not only understand the meaning of individual words, they also understand the importance of ______ in a sentence.
A.the subject
B.the verbs
C.the main structure
D.word order小题4:When they play, dolphins seems to like making their games as ______ as possible.
A.difficult
B.easy
C.interesting
D.relaxing小题5:Dolphins will jump out of the water when they hear a whistle noise in order to _______.
A.watch people
B.breathe fresh air
C.enjoy themselves
D.get some food
《锅炉压力容器产品安全性能监督检验规则》规定,受检单位发现监检单位或者监检员在监检工作中有违反规定的失职行为时,有权拒付与其有关产品的监检费。
对资产规模500亿元以上的银行类金融机构,质押率可适度放宽,其中:人民币1000亿>资产规模≥人民币500亿的,质押率≤()。
A.90%
B.100%
C.110%
D.130%
恶性滋养细胞肿瘤的瘤细胞进入脑血管后,分为三个阶段,即______、脑瘤期、脑疝期。