下列各组词语中读音和书写全部准确的一项是（  ）（2分）

A 芥蒂（dì）  坦荡如底（dǐ）      B迸（bìng）溅   强(qiǎng)耽不舍                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            

C 晕（yùn）圈 争妍（yán）斗艳     D亵读（dú）    盘虬（qiú）卧龙

通入CO₂的作用是

A．减少与空气接触
B．避光
C．调节pH
D．添加抗氧剂
E．添加金属络合剂
在防止药物制剂氧化过程中