问题：The river widens considerably as it begins to turn west.A．twistsB．stretchesC．broadensD．bends...
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问题：Paragraph 5 ______...
问题：Paragraph 6 ______...
问题：But in the end he approved of our proposal.A．undoubtedlyB．certainlyC．ultimatelyD．necessarily...
问题：John is collaborating with mary in writing an article.A．cooperatingB．competingC．combiningD．arguing...
问题：Sperm whales can produce stronger ultrasonic waves to kill their prey than dolphins.A．RightB．WrongC．Not mentioned...
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：Hearing problems may be alleviated by changes in diet and exercise habits.A．removedB．curedC．worsenedD．relieved...
问题：As early as the 6th century, Irish fishermen started raising dolphins in the Shannon estuary.A．RightB．WrongC．Not mentioned...
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：Whistles could also be used to communicate between adult dolphins and baby dolphins.A．RightB．WrongC．Not mentioned...
问题：A great deal has been done to remedy the situation.A．maintainB．improveC．assessD．protect...
问题：The food is insufficient for three people.A．instantB．infiniteC．inexpensiveD．inadequate...
问题：Irish Dolphins May Have a Unique DialectIrish scientists monitoring dolphins living in a river estuary in the southwest of the country believe they may have developed a unique dialect to communicate with each other.The Channel Dolphin and Wildlife Foundat...
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：The energy stored in coal ______....
