剧烈运动时尿量减少的主要原因是
A．肾小囊内压升高
B．抗利尿激素分泌增多
C．肾小动脉收缩，肾血流量减少
D．醛固酮分泌增多
参考答案：C
Java程序与数据库的连接机制是______。
A) ODBC B) JDBC C) ODBC API D) SQL/CLI
——Why didn’t you call me this morning?
——I ______ call you. I called you all the morning, but I couldn’t ______.
A．did, get over
B．do, get it
C．didn’t, get together
D．did, get through
