男性,55岁。双下肢行走不稳1年,双手发笨、不能持筷,排尿费力半年。查体:四肢锥体束征阳性,双侧T4以下针刺觉减退。颈椎X线平片见颈椎管狭窄,MRI见 C4-7脊髓腹背侧受压。 该患者的治疗选择
A. 枕颌带牵引
B. 静脉药物溶栓
C. 手术治疗
D. 对症治疗
男性,22岁。10天来发热伴咽痛,2天来双眼睑水肿。查体:BP 150/95mmHg,双眼睑水肿,咽红,扁桃体Ⅱ度肿大,双下肢轻度可凹性水肿。化验尿蛋白(++),红细胞30~50个/HP,血肌酐96μmol/L,血尿素氮7mmol/L。 血清C,水平有鉴别诊断意义,该患者的血清C,水平是
A. 血清C3正常
B. 血清C下降,8周内恢复正常
C. 血清C3下降,8周内不恢复正常
D. 血清C3正常,8周后下降
Aedes albopictus, a variety of mosquito that has recently established itself in the southeastern United States, is less widespread than the indigenous swamp mosquito. Both the swamp mosquito and A. albopictus can carry viruses that are sometimes fatal to humans, but A. albopictus is a greater danger to public health. Each of the following, if tree, provides additional information that strengthens the judgment given about the danger to public health EXCEPT:
A. Unlike the swamp mosquito, A. albopictus originated in Asia, and larvae of it were not observed in the United States before the mid-1980’s.
B. Unlike the swamp mosquito, A. albopictus tends to spend most of its adult life near human habitation.
C. Unlike swamp mosquito larvae, A. albopictus larvae survive in flower pots, tin cans, and many small household objects that hold a little water.
D. In comparison with the swamp mosquito, A. albopictus hosts a much wider variety of viruses known to cause serious diseases in humans.
E. A. albopictus seeks out a much wider range of animal hosts than does the swamp mosquito, and it is more likely to bite humans.