SingingwithPurpose下最后一句Manyfrogscallonlyatacertaintimeofnight.可知,许多青蛙只在夜里某个确定的时间叫。故C项错误。故正确答案为D。4. 主旨题。根据文章第一段第二句That'sthesoundmadebyfrogssingingatnight.可知,开篇点出青蛙的叫声,接着从四个方面来描述青蛙的叫声能被听见,而且很响亮,青蛙是有目的性地...
That's the sound made by frogs singing at night. You might have thought the noises were just the musical sounds of nature. You probably didn't realize that you were listening to frogs communicating with one another. These familiar sounds are not random(随意的) but are actually meaningful to...
That's the sound made by frogs singing at night. You might have thought the noises were just the musical sounds of ure. You probably didn't realize that you were listening to frogs' communicating with one another. These familiar sounds are not random(随意的) but are actually meaningful to...
Paragraph 1: The calling or singing of Frogs plays an important role in their reproduction — specifically, in helping individuals find and select mates. Sound has many advantages as a communication signal. When sounds are broadcast, the auditory receptors do not need to be in a particular orien...
Paragraph 1: The calling or singing of Frogs plays an important role in their reproduction — specifically, in helping individuals find and select mates. Sound has many advantages as a communication signal. When sounds are broadcast, the auditory receptors do not need to be in a particular orien...
Have you ever heard a group of frogs singing at night? You probably didn't realize that you were listening to frogs communicating with one another.Frogs are good at being heard but not seen, and that's important for their safety. These animals have some characteristics(特征) that protect th...
If you go out to the fields at night in spring or summer,you can hear frogs singing I ( happy) here and there. It seems as if they were performing a field symphony(交响乐).The frog is a good and useful creature that benefits human beings. They can catch fast-moving 2 ( insect).Ea...
[答案] to小题3:[解析] be regarded as“被认为是……”。[答案] as小题4:[解析] 与上文是转折关系，且后面没有逗号，故用But。[答案] But小题5:[解析] 根据语意“这是一种不知羞耻的残忍的行为”，可知此处应用不定冠词。[答案] a小题6:[解析] 上面讲到的“吃”青蛙是它数量...
This video shows two different Western Chorus Frogs, each singing by the edge of the pond. You can hear many other Western Chorus Frogs in the background. Pacific Chorus Frogs (Pseudacris regilla are found over much of the west coast of North America. Like many other frogs, they have ...
And frogs in the pools singing at night, And wild plum trees in tremulous white, Robins will wear their feathery fire, Whistling their whims on a low fence-wire; And not one will know of the war, not one Will care at last when it is done. ...