The author recommends that young people ______.
A. check blood hemoglobin yearly
B. be on a strictly vegetarian diet
C. lose weight
D. do some more studies on hemoglobin
查看答案
Supporters of Coca-Cola would say that its new practice will ______.
A. set a moral example for other commercialism on campus
B. stop any commercialism in school in the near future
C. help the business prevail over others in school
D. gain a wide acclaim from all the students
下列溶剂中极性最强的是
A. 三氯甲烷
B. 醋酸乙酯
C. 丙酮
D. 甲醇
E. 乙醇
原发性高钠血症的发生机制是
A. 摄入钠过多
B. 排出钠过少
C. 醛固酮分泌减少
D. 渗透压调定点上移
E. 渗透压调定点下移
与细菌耐药性有关的遗传物质是
A. 性茵毛
B. 细茵染色体
C. 质粒
D. 毒性噬茵体
E. 异染颗粒
微信支付 
支付宝支付