A-A+
The product was attacked when it was first ___
问题详情
The product was attacked when it was first ______ , but gradually it was accepted.
A．advanced
B．occurred
C．appeared
D．challenged请帮忙给出正确答案和分析，谢谢！
参考答案
正确答案：C
解析：句意：当这个产品初次出现时受到了攻击，但逐渐地人们接受了它。
