用于过敏性休克治疗的药物首选
A．去甲肾上腺素
B．糖皮质激素
C．肾上腺素
D．抗组胺药
E．异丙肾上腺素
参考答案：C
持票人对支票的权利，自出票Et起()个月。
A.2
B.5
C.6
D.8
We have received your letter of September 12，（）we are glad to know that you are interested in our electric heaters.
A.which
B.atwhich
C.fromwhich
D.inwhich
