患儿，女，5岁。2岁时发现内斜视。检查：视力右眼0.3，左眼0.1。眼位：左眼+15°。眼球运动各方向均不受限。眼底未发现明显异常。同视机检查不合作。睫状肌麻痹下验光结果为中度远视。

为观察眼位变化情况，至少戴镜多长时间（）。

A.1个月

B.2个月

C.3个月

D.3～6个月

E.1年

DOM is a platform-and language- (66) API that allows programs and scripts　to dynamically access and update the content, structure and style of WWW documents　(　currently, definitions for HTML and XML documents are part of the specification　).The　document can be further processed and the results of that processing can be　incorporated back into the presented (67) .DOM is a (68) -based API to　documents ,which requires the whole document to be represented in (69) while　processing it .A simpler alternative to DOM is the event –based SAX, which can be　used to process very large (70) documents that do not fit into the memory　available for processing.

68（）

A．table　　

B．tree　

C．control　

D．event