14．After studying in a medical college for five years, Jane ________ her job as a doctor in the countryside.
A．set out B．took over
C．took up D．set up
答案 C [考查动词短语辨析。句意：在一所医科大学学了五年以后，Jane开始下乡当一名医生。set out出发，动身；开始做(接不定式)；take over接管；take up从事；set up建立。 ]
15．It is reported that the floods have left about ________ people homeless.
A．two thousand B．twothousands
C．two thousands D．two thousands of
答案 A [考查数词用法。句意：据报道，洪水已经使约2，000人无家可归。dozen, score, hundred, thousand, million等前有具体数字时，要用其单数形式。这些词前没有具体数字，且与of连用时，用复数。]
