this article is _ to be studied carefully.A.worth B.worthy of C.worthy D.worth while答案是C,为什么呢?请各大侠帮我解释解释吧~~~

this article is _ to be studied carefully.A.worth B.worthy of C.worthy D.worth while答案是C,为什么呢?请各大侠帮我解释解释吧~~~
this article is _ to be studied carefully.
A.worth B.worthy of C.worthy D.worth while
答案是C,为什么呢?请各大侠帮我解释解释吧~~~

this article is _ to be studied carefully.A.worth B.worthy of C.worthy D.worth while答案是C,为什么呢?请各大侠帮我解释解释吧~~~
1.worth adj&n.值得,应该
①sb./sth.be worth...
②be worth doing值得做...
2.worthy adj&n.有价值的,值得...的
①be worthy of+n.
②be worthy of being done值得做...
③be worthy to be done值得做...