A、It may iterate over arrays， collections， maps， and strings.
B、The body of the tag may contain EL code， but not scripting code.
C、When looping over collections， a loop status object may be used in the tag body.
D、It may iterate over a map， but only the key of the mapping may be used in the tag body.
E、When looping over integers （for example begin=’1’ end=’10’）， a loop status object may not be used inthe tag body.