组织学表现为恶性者所占比例很高的疾病是（）
A.白斑
B.红斑
C.扁平苔藓
D.慢性盘状红斑狼疮
E.口腔黏膜下纤维化
参考答案：B
解析：考点：黏膜恶性变疾病。口腔白斑恶变率为30%～50%，扁平苔藓其恶变率约为1%，慢性盘状红斑狼疮恶变率为0.35%～0.50%，口腔黏膜下纤维化恶变率低，红斑恶变率比较高相比较其他口腔癌前病变而言，所以红斑恶变率最高，故本题选B。
| It may be necessary, in order that .future (51) can enjoy clean air, that more of the (52) is borne by long-term central government fund．As air pollution varies enormously from place to place and can, indeed, be very local, it may also be necessary for the central government to (53) money so that local authorities can (54) special local problems. That these can be significant was shown by the report made in 1970 (55) behalf of the London Boroughs Association. This (56) that in central London since 1958 smoke concentrations have decreased by 80 percent, whereas sunshine has increased by 70 percent and winter visibility has (57) threefold, There have been (58) in mortality and hospital admissions (59) with air pollution and in the response to it of bronchitis, as well as clear if less documented increases in plant types and bird (60) n the cities. |
A．reviewed
B．revolved
C．revealed
D．regained
