已知梯形ABCD中, AB∥CD, 过C作腰AD的平行线交底AB于E点, 若DC=4cm,
0 200501 200509 200515 200519 200525 200527 200531 200537 200539 200545 200551 200555 200557 200561 200567 200569 200575 200579 200581 200585 200587 200591 200593 200595 200596 200597 200599 200600 200601 200603 200605 200609 200611 200615 200617 200621 200627 200629 200635 200639 200641 200645 200651 200657 200659 200665 200669 200671 200677 200681 200687 200695 366461
△EBC的 周长是16cm, 则梯形的周长是
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A.18cm B.20cm C.24cm D.28cm