6、ntD.quantity答案 A [句意:去年拿到驾照的学员数量达到了20万,平均每年4万。anaverageof...平均……;anumberof许多,大量;anamountof许多,大量;aquantityof许多,大量。]2.________figuresfromsixdifferentEuropeancities,thereportisworth________.A.Basingon;discussingB.Basingon;ofdiscussingC.Basedon;discussingD.Basedon;ofdiscussing答案 C [第一
7、个空为分词短语作状语;第二个空beworthdoing为固定搭配。]3.IwasverygratefultoDrLiforhis________me________myseriousdisease.A.treating;ofB.treating;forC.treat;ofD.treat;for答案 B [由于此空前有“his”,故必须填名词,从而构成固定搭配treatsb.foranillness“治疗某人的病”。]4.Birds________theirwingsrapidlyastheyflyon.A.hitB.shakeC.beatD.strike答