TheNativeAmericaninterpreterSacajaweawasavaluablememberoftheLewisanddarkexpeditionin1805.

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

Cometsarestillregardedwithawebysomepeople.

• A.wonder
• B.concern
• C.resentment
• D.detachment

Oneofthegreatestbreakthroughsforprofessionalwomencamein1973whenthefieldofbankingopenedupforthem.

• A.mostseriousdisappointments
• B.mostsignificantadvances
• C.mostabruptdeclines
• D.mostcrucialsituations

AlthoughtheCarbon14methodofdatingoldobjectsisnotfoolproof,itisthebestmethodavailableatpresent

• A.whollyoperational
• B.entirelyserviceable
• C.fullyreliable
• D.completelysafe

Creamoftartar酒石,aweakacid,canbeaddedtoeggwhitestohelpthemfoam泡沫whentheyarebeaten

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

Peoplewhodonotsleepenoughtendtobecomeirritable.

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