题型：判断题 遗传缺陷和遗传疾病产生的原因主要是由于（）基因所引起，根据它们影响强烈的程度，这类基因可分为三种：一种是在它们的影响下，导致母畜怀孕期间胚胎中途夭折或出生时死亡的，这种基因称做（）：另一种是可引起幼畜出生后或晚些时间死亡的基因，称为（）或（）；还有一种是某些基因虽然不致于使动物致死，但降低其生产力或形成外形、机能有缺陷的性状，这种基因称为（）或（）。 查看答案
题型：判断题 Welcome to our school. You can do a lot of things here. Come and join us.TimetableSunday8:30---11:30Personal（个人的） Inventions（发明）You can see many inventions by the students;you may also bring your own inventions.Monday19:00---21:00Space and ManDr. Thomas WestIf you want to know more about the universe(宇宙).Wednesday19:30---21:00Modern Medicine Mrs. Lucy GreenWould you like to know medical science?Friday18:30---21:00Computer Science Mr. Harry Morison from Harvard University（哈佛大学）Learn to use Windows XP.小题1:You may have a chance to introduce your inventions（发明） on _________.A．SundayB．MondayC．WednesdayD．Friday小题2:The person who teaches Computer Science is from___________.A．CanadaB．AustraliaC．New ZealandD．America小题3:You may learn something about a disease(疾病) called SARS from __________.A．Dr. WestB．Mr. MorisonC．Mrs. GreenD．Mr. Thomas小题4:If you want to learn something about satellites(卫星), you can go to the class from______.A．8:30 to 11:30 on SundayB．19:00 to 21:00 on Monday C．19:30 to 21:00 on WednesdayD．18:30 to 21:00 on Friday 查看答案
题型：判断题 患者男，65岁。血压升高病史8年，目前血压为24／14kPa，X线和心电图示左室肥大，尿常规轻度蛋白尿，眼底检查示视网膜动脉狭窄，动脉交叉压迫。近2天主诉头晕、头胀、血压波动，伴左侧肢体肌力减退，麻木，此时最需要进行何种检查（）A.脑电图B.脑血管造影C.脑CTD.血液流变学检查E.动态心电图 查看答案
