Part 2 Read the reading passage entitled “4单元测验区阅读练习文本“ in Extended Materials S

ection (请阅读拓展学习资源区的“ 4单元测验区阅读练习文本’) and answer the following questions by selecting the most appropriate choice. 16. From the conclusion part, what does the literature reveal？

A、vast amount of laboratory bonding studies on dental oxide ceramics.

B、Air-abrasion at a moderate pressure and using phosphate monomer containing primers and/or luting resins provide long-term durable bonding to glass-infiltrated alumina.

C、A little amount of laboratory bonding studies on dental oxide ceramics.

D、Air-abrasion at a moderate pressure and using phosphate monomer containing primers and/or luting resins do not provide long-term durable bonding to glass-infiltrated alumina.