Q30: C

The ancient Anasazi harvested such native desert vegetation as the

purple-flowered bee plant, what they now commonly call wild spinach in

northern Arizona and other parts of the southwestern United States.

what they now commonly call a plant that they now commonly call now commonly called and is mow commonly called which it is now commonly called 为什么不用b? 同位语不是优于定从马？

都可以的情况下,哪个简洁用哪个. 同位语优于定从只是因为大多数情况下同

位语避免了定从指代不清修饰对象不明确的问题.