We havepleasure in advising that a （　） was established in

【名词&注释】

原发性(primary)、白介素-2(interleukin-2)、静脉注射丙种球蛋白(intravenous immunoglobulin)

[单选题]We havepleasure in advising that a （　） was established in yourfavour through Bank of China.

A. confirmed credit
B. contract
C. way bill
D. packing list

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学习资料：

[单选题]哪项是最重要的原发性免疫缺陷病的替代治疗（）

A. 静脉注射丙种球蛋白
B. 胸腺素
C. 白介素-2
D. 干扰素
E. 酶

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