The reason why birds don’t get lost on long flight . Experiments showed that .

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问题 The reason why birds don’t get lost on long flight ______.
Experiments showed that ______.

选项 A、birds are likely to get lost if there aren’t man-made stars.
B、day-flying birds depend on the sun while night-flying birds depend on the stars
C、birds depend on the sun to guide them
D、birds depend on the stars to guide them

答案B

解析

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大学英语三级B级

大学英语三级

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The reason why birds don’t get lost on long flight ______. Experiments showed that ______.

大学英语三级B级

大学英语三级

Afteryearsinthewilderness,theterm"artificialintelligence"(AI)seemspoisedtomakeacomeback.AIwasbiginthe1980sb

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Thecommitteehasdecidedthattheracewouldcontinue_____theweather.

Howmenfirstlearnedtoinventwordsisunknown.Allwereallyknowisthatmen,unlikeanimals,somehowinventedcertainsound

Whydon’tbirdsgetlostontheirlongmigratory(迁徙)flight?Scientistshavepuzzledoverthisquestionformanyyears.Nowthe

Doyouthink______possibletomasteraforeignlanguagewithintwomonths?

______hecompletedhiseducationabroad,hehasbeenworkingforatravelagencyinShanghai.

Thelinkbetweenhealthandincomeseemsprettyuncontroversial.【C1】______all,healthypeoplecanworklongerandharderthansi

Heis______helpnow;heisdying.

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