In the event of failure of only one landing gear _____ , the pilot may choose to retract all the gear.

词根tract的语义是to draw，retract、subtract、extract、distract的词义分别是（）。

I am sure he will not retract his promise. A: withdraw B: change C: forget D: fulfill

We have to ______ our hope of reaching the production target this year. A: release B: retract C: resign D: abandon

Castigate is to punishment as () A: apologize is to slur B: deny is to accusation C: retract is to statement D: suspend is to judgment E: banish is to exile

A belly landing or gear-up landing is when an aircraft lands without its landing gear fully ------------. A: extend B: extended C: retract D: retracted

In the event of failure of only one landing gear _____ , the pilot may choose to retract all the gear. A: brake B: leg C: crank D: tire

She has to __________ her passport before making a trip to South Africa since it will expire next month. A: revise B: retract C: review D: renew

Long-term____from people made him uneasy in front of the crowd A: onset B: acute C: property D: predispose E: retract F: isolation G: abrupt

Men stand naturally with arms crossed and need to pay attention to _________. A: Slightly retract the shoulders back B: Hold your chest and abdomen C: Drooping arms naturally D: Look straight ahead