Urbanrenewalprogramsstrivetoupgradeareasthatarebecomingslums.

• A.reproach
• B.improve
• C.fortify
• D.uproot

TheNativeAmericaninterpreterSacajaweawasavaluablememberoftheLewisanddarkexpeditionin1805.

• A.veryfriendly
• B.veryuseful
• C.verythoughtful.
• D.verywealthy

Creamoftartar酒石,aweakacid,canbeaddedtoeggwhitestohelpthemfoam泡沫whentheyarebeaten

• A.whipped
• B.aged
• C.boiled
• D.cracked

Insectpestsareamongtheleadingcausesofcropfailure.

• A.expected
• B.chief
• C.natural
• D.least

InthenortheasternUnitedStates,itrainsintermittently间歇地throughoutthespring.

• A.steadily
• B.abundantly
• C.periodically
• D.daily

Peoplewhodonotsleepenoughtendtobecomeirritable.

• A.easilyannoyed
• B.ill
• C.weary
• D.stiffandsore