题目内容

【C5】

A. numeral
B. sound
C. gesture
D. voice

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【C3】

A. published
B. launched
C. announced
D. released

【C4】

A. benefit
B. influence
C. harm
D. threaten

Suppose your university is going to host an English contest by the name of "Green Travel".

在危险货物包装中盛装具有较大危险性的货物，包装强度要求高的为（）类包装。

A. Ⅰ
B. Ⅱ
C. Ⅲ
D. Ⅳ