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【简答题】
白化病是一种较常见的皮肤及其附属器官黑色素缺乏所引起的疾病,由于先天性缺乏酪氨酸酶,或酪氨酸酶功能减退,黑色素合成发生障碍所导致的遗传性白斑病.白化病的致病基因是由一种常染色体上隐性基因控制.现在有一对夫妇,其中父亲表现正常(Aa),母亲表现正常(Aa). (1)导致人的白化病的基因是______(填显性或隐性)基因. (2)如果这对夫妇生一个孩子患白化病的可能性是______;皮肤表现为正常颜色小孩的基因型是______和______. (3)这对夫妇所生子女中,男孩所占比例为______;女孩所占比例为______. (4)白化病是一种______病.预防遗传病的措施是:______;______和______.
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参考答案:
举一反三
【单选题】患者女,60岁,因“咳嗽、咳痰20年,加重伴呼吸困难、发热1d”来诊。实验室检查:PaO 2 40mmHg,PaCO 2 80mmHg。该患者最可能的诊断是()
A.
肺血栓栓塞症
B.
支气管扩张
C.
肺动脉高压,WHO心功能分级Ⅲ级
D.
慢性阻塞性肺疾病,Ⅰ型呼吸衰竭
E.
慢性阻塞性肺疾病,Ⅱ型呼吸衰竭
【单选题】According to Paragraph 4, Chris Bittman believes that
A.
endowment funds should be invested in business to make money.
B.
the endowment spending policies of American colleges should be reformed.
C.
school's policy of spending relies on its profits of endowment investment.
D.
the gap between rich schools and poor ones still remains.
【简答题】由块体和砂浆砌筑而成的结构叫()。
【简答题】钢笔的正确携带位置应该是男士西装()的口袋。
【单选题】Thanks to his father's________, the shy boy gradually built up his confidence and made great progress. [     ]
A.
destination
B.
ambition
C.
promotion
D.
inspiration
【单选题】6 Management reserves are normally defined as a % of the total budget. As a project progresses, the project manager wants the $ value of management reserve to _____, whereas the customer wants the man...
A.
Increase, increase.
B.
Increase, decrease.
C.
Decrease, decrease.
D.
Decrease, increase.
E.
Remain the same, return to customer
【单选题】钢笔的正确携带位置应该是男士西装的口袋()。
A.
外侧
B.
内侧
C.
左胸
D.
右胸
【简答题】Chris believes that volunteering is an important aspect of their ________________.
【单选题】around 20% of youngsters【C6】______best with background music,
A.
work
B.
relax
C.
think
D.
progress
【简答题】患者女,40岁。因SLE口服皮质激素近2年,发热2周伴咳嗽,痰中少量带血,查肺无异常体征,胸片右肺中野多发片状结节影伴空洞,血沉45mm/h,PPD5IU(-)。诊断首先考虑A、SLE肺部表现 B、浸润性肺结核 C、慢性纤维空洞性肺结核 D、支气管肺癌 E、结节病 对该患者PPD试验结果的解释哪项是错误的A、阳性表示结核感染 B、强阳性可支持结核诊断 C、阴性可排除结核病 D、弱阳性提示卡介苗交叉...
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