Withlasersscientistscanprobemanyphysicalprocesses,suchascombustion,oncebeyondourken.视野
TheeconomyofDallas,Texas,isstronganddiversified.
Creamoftartar酒石,aweakacid,canbeaddedtoeggwhitestohelpthemfoam泡沫whentheyarebeaten
AfewmonthsafterhehadarrivedinChina,Mr.Smith___________inlovewiththepeopleandculturethere.
China'simageisimprovingsteadily,withmorecountries__________itsroleininternationalaffairs.
