Pollisanexampleofaseverelydisabledpersonwhohasbecome______atmanysurvivalskills.
B
【句意】波尔是个重残者掌握多种生存技能的典范。
【难点】proficient意为“熟练的，精通的”;efficient意为“效率高的，有能力的”;persistent意为“坚持不懈的，执着的”;transient意为“短暂的，转瞬即逝的”。
Oneoftherequirementsforafireisthatthematerial____toitsburningtemperature.
Thelocalgovernmentleadersaremakingeveryeffortto__theproblemofpoverty.
____,sheledalifeofcompleteseclusion.
Perhapsthecustomerhas____hismonthlystatementandnotpaidthebill.