参考答案：不对。
原因：动词重叠
be是系动词，focus是实意动词，两个动词不能连用
如果需要连用的话，focus要变成ing形式或者focused，be focusing/focused on
例如：
Many firms are focusing on increasing markets overseas.
许多商行都专注于扩大国外市场.
It's as if all eyes are focused on me.
好像所有的目光都聚集在我身上似的
focus是一个动词，前面加上系动词be就会变为被动形式be focused on
focus on sth就行，或者focusing on为正在进行时
最好把完整的句子贴出来。只看这部分是不对的，可以说which focuses on the ...
which is focused on ...
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