Although we still have some problems to face,______our work has been successful.
A. by all means
B. in the long run
C. by and large
D. on the run
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下列关于臁疮的叙述错误的一项是（）
A. 因经久站立或负担重物，造成下肢筋脉横解，青筋显露，瘀停脉络，久而化热而成
B. 好发于小腿中下1/3交界处(踝骨上9cm)之内、外侧
C. 患者多有下肢恶脉(静脉曲张)、慢性丹毒等病史
D. 多发于青年人
E. 溃疡前期，小腿下段轻度肿胀，内臁或外臁处皮肤青紫瘀斑或红褐色，渐至皮肤粗糙，脱屑，色素沉着，苔藓样变，轻微瘙痒
What, according to this passage, would be the major impact of the newer energy sources（）
A reduction of the fuel consumed by conventional power stations.
B. A reduction of the manpower required by conventional power stations.
C. The total replacement of conventional power stations.
D. The total replacement of conventional energy sources.
某男，患外科疾病，临床患部可见：干燥、枯槁、皲裂、脱屑等，伴见口干舌燥、咽喉干燥或疼痛等全身症状。此为下列哪一种致病因素导致（）
A. 风
B. 寒
C. 暑
D. 火
E. 燥
The power produced by the waves, tide and wind（）
A. is not as consistent as it should be
B. is generally less in winter than in summer
C. is never likely to be very great
D. is consistent
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