参考答案

一、单项

1．C2．D3．C4．D5.B6.B7.C8.C9.C10.C11.C12.C13.B14.B15.A16．C17．B18．A19．A20．B21．B22．D23．A24．A25．B26．D27．B28．B29.A30.A31.B32.C33．C34．A35．D36．C37．D38．C39．C40．B41．A42．A43．C44．B45．C46．C47．C48．D49．B50．A51．B52．B53．C54．A55．B56．D57．A58．B59．A60．C
二、多项

1．DE2.AB3.ABC4.AB5.ACD6.CD7.AE8.ABCD9．BDE10. BD11．CE12．CDE13．ABD14.AC15．ADE16．ADE17．BE18．ACD19．ABCD20．DE