dolphins are smart because they can help people 同义句 dolphins can help people ,() they are smarti don't like math because it's a little difficult for me（同义句）math is () () difficult for me ,() i don't like it
问题描述：
dolphins are smart because they can help people 同义句 dolphins can help people ,() they are smart
i don't like math because it's a little difficult for me（同义句）
math is () () difficult for me ,() i don't like it
答
dolphins can help people ,as they are smart
math is a little difficult for me ,so i don't like it
答
1. for
2. a little; so
答
dolphins are smart because they can help people同义句 dolphins can help people ,( so /therefore) they are smart前句：海豚聪明是因为他们能帮助人后句：海豚能帮助人,所以/因此他们聪明一个意思a little ,so...
答
therefore they are smart
Math is quite fifficult for,so i don't like it