Bats (are able) (to guide them) by producing sound waves (too high) for us (to hear).

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问题 Bats (are able) (to guide them) by producing sound waves (too high) for us (to hear).

选项 A、are able
B、to guide them
C、too high
D、to hear

答案B

解析应改为to guide themselves。

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成人本科学位英语

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Bats (are able) (to guide them) by producing sound waves (too high) for us (to hear).

成人本科学位英语

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Icomefromacountrywhereforvirtuallytwocenturiesthepeopleofcolorhave,asadeliberatepolicy,been______thefreedom

Imaginegoingtoyourdoctorwithacomplaintoffrequentheadaches.Yourdoctortakesaprescriptionpadandwritesawordoni

Therehavebeenseveralclaimstohaveclonedhumansoverthepastfewyears.Mosthavebeenbogus.Buttheannouncementmadeth

Thephysiciansinahospitalformthecoreofthemedicalstaff.Buttheycouldn’tprovideeffectivemedicalcaretotheirpatie

Sincehispapercontains(less)mistakes(than)(ours),hiswillbeentered(in)thecontest.

Bytheendofthismonth,wesurely______asatisfactorysolutiontotheproblem.

Theystoppedthecarontopofahillinorderto______.WhydidGeorgelaughatAnne’squestion?

Themarketisaconcept.Ifyouaregrowingtomatoesinyourbackyardforsaleyouareproducingforthemarket.Youmightsell

(Theworkers)inthefactory(demanded)thattheirpay(would)beraised(by)20percent.

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