多项选择题
A. ${cart = null }
B. <c：remove var=”cart” />
C. <c：remove var=”${cart}” />
D. <c：remove var=”cart” scope=”session” />
E. <c：remove scope=”session”>cart</c：remove>
F. <c：remove var=”${cart}” scope=”session” />
G. <c：remove scope=”session”>${cart}</c：remove>
多项选择题 AssumethescopedattributeprioritydoesNOTyetexist.Whichtwocreateandsetnewrequest-scopedattributeprioritytothevalue“medium”？（）
多项选择题 Whichthe twoJSTLURL-relatedtagsperformURLrewriting？（）
单项选择题 Assume that a news tag library contains the tags lookup and item： Lookup Retrieves the latest news headlines and executes the tag body once for each headline. Exposed a NESTED page-scoped attribute called headline of type com.example. Headline containing details for that headline. Item Outputs the HTML for a single news headline. Accepts an attribute info of type com.example. Headline containing details for the headline to be rendered. Which snippet of JSP code returns the latest news deadlines in an HTLM table， one per row？（）