—Where have you been?

—I got caught in the traffic jam; ______ I’m here just on time.

A．however

B．otherwise

C．though

D．anyhow

垂体性糖尿病的原因是()

A、胰岛素缺乏

B、糖皮质激素过多

C、生长素过多

D、甲状腺激素过多