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问题：The river widens considerably as it begins to turn west.A．twistsB．stretchesC．broadensD．bends...
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问题：Sperm whales can produce stronger ultrasonic waves to kill their prey than dolphins.A．RightB．WrongC．Not mentioned...
问题：As early as the 6th century, Irish fishermen started raising dolphins in the Shannon estuary.A．RightB．WrongC．Not mentioned...
问题：Do scientists know how many cryptic species exist?A．Not yet.B．Yes, they do.C．They will know the answer in another one or two years.D．They will never know the answer....
问题：AIBS's is composed of ______.A．more than 80 societies and 250,000 membersB．250,000 biologistsC．80 member organizationsD．more than 250,000 members and 80 member societies...
问题：But in the end he approved of our proposal.A．undoubtedlyB．certainlyC．ultimatelyD．necessarily...
问题：Why do people replace the term creationism with the term intelligent design nowadays?A．Because "intelligent design" represents the modified theory of evolution.B．Because they believe God created different species.C．Because the term creationism is unscient...
问题：What will be the benefit if the research on smart windows turns out to be successful, according to the last paragraph?A．The buildings will look different.B．Windows can be as large as you want.C．We may not need air conditioners any more.D．They are less exp...
问题：John is collaborating with mary in writing an article.A．cooperatingB．competingC．combiningD．arguing...
问题：Which of the following about the African bush elephant and the African elephant is true?A．The WCU are interbreeding those elephants.B．They are interbreeding species.C．They are two genetically distant species.D．They depend on each other for survival....
问题：Paragraph 6 ______...
问题：To make electrochromic windows change color, what is applied to the window glass?A．Electricity.B．Tungsten oxide.C．A battery.D．A voltage....
问题：Whistles could also be used to communicate between adult dolphins and baby dolphins.A．RightB．WrongC．Not mentioned...
问题：Paragraph 5 ______...
问题：The food is insufficient for three people.A．instantB．infiniteC．inexpensiveD．inadequate...
