________ in the traffic jam, she failed to catch the train, which mader her upset.

A．Catching

B．Having caught

C．To catch

D．Caught

可使血糖浓度下降的激素是（）

A.肾上腺素

B.胰高血糖素

C.胰岛素

D.生长素

E.糖皮质激素