参考答案
第一单元
1.D2.C3.E4.B5.A6.C7.B8.C10.C11.D12.B13.E14.D15.D16.D17.A18.C19.D20.D26.E27.E28.D29.C30.E21.E22.C23.E24.B25E39.B40.A31.E32.A33.B34.B35.B36.C37.C38.B49C50.B41.A42.C43.E44.A45.E46.E47.A48.E55.C56.D57.D58.C59C60.A51.B52.D53.D54.D68.D69.C70.C61.A62.C63.C64.E65.C66.E67.E74.E75.D76.C77.D78.E79.C80.E71.C72.D73.C81.C82.D83.E84.A85.A86.D87.D88.D89.D90.A91.B92.D93.C94.D95.D96.D97.A98.E99.E100.A102.E103.D104.B105.E106.B107.A108.D109.B110.E101.B112.C113.B114.A115.D116.D117.A118.C119.B120.E111.A122.A123.A124.E125.B126.A127.A128.B129.D130.E121,D132.B133.B134.C135.E136.E137.A138.B139.D140.E131.B141.B142.C143.B144,C145.E146.E147.B148.D149.D150.B