When discussing the development of the rule of law in China, legal experts often note that China has many perfectly sufficient laws ______, but the real challenge is enforcement. ( ) A.on the brochure B.on the books C.on the handbook D.on the booklet

When discussing the development of the rule of law in China, legal experts often note that China has many perfectly sufficient laws ______, but the real challenge is enforcement. ( ) A.on the brochure B.on the books C.on the handbook D.on the booklet

正确答案：B