题目内容

Twotechnicianshavebeenexaminingtheequipmentsincemorninginanattemptto（）itsbreakdown.

A. diagnose
B. damage
C. scare

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Iwasthefirsttobe（）intotheroomtomeetthepresidentofthecompany.

A. usher
B. ushering
C. ushered

Asthestudyshows,theoldsayingthattwoheads（）betterthanoneisnotalwaystrue.

A. inject
B. perform
C. infuse

MycarbrokedownlastMondaywithoutanyprevious（）,leavingmeanhourlatetowork.

A. partner
B. boost
C. symptom

What'sthatsoft（）thatcoversthefourwallsofthebaby’sroom?

A. substance
B. kidney
C. cell