- 试题详情及答案解析
- When first to the market, these products enjoy great success.
| A．introducing | B．introduced |
| C．introduce | D．being introduced |
- 答案：B
- 试题分析：考查被动语态。完整形式为when (these products were) first introduced to the market,作时间状语从句，为避免主语重复省略括号内容。句意：这些产品初次被引进市场就取得了巨大成功。故选B。
考点：考查被动语态