【正确答案】 A

【答案解析】[理由] 本句原为：
Cadence was founded in 1983, Cadence has since become one of the largest makers of chip design software...(×)
如此一来，这两个句子间无连接词连接，为错误结构，应改正如下：
1) 使用分号：
Cadence was founded in 1 983; it(=Cadence) has since become one of the largest makers of chip design software...
2) 使用连接词：
Cadence was founded in 1983, and it has since become one of the largest makers of chip design software...
3) 将第一个句子改为分词结构，原则如下：
a)两个句子的主语相同时将第一个主语删除。
b)第一个从句的动词若为一般动词时则改为现在分词；动词若为be动词则改为现在分词being，而being可省略。
[例] I was tired after all the work, I went to bed early.(×)
→(Being)tired after all the work, I went to bed early.(√)
(做完一切工作后我很疲惫，便早早上床睡觉去了。)
I have nothing to do, l feel very bored.(×)
→Having nothing to do, I feel very bored.(√)
(我没事干，所以觉得很无聊。)
故原句可改写如下：
(Being)founded in 1983, Cadence has since become one of the largest makers of chip design software...
*上述的Founded in 1983视为分词短语，作形容词用，用以修饰之后的主语Cadence。
根据上述，(A)应为正选。
find(发现)以及found(创立)的三态为：