Unlike the original National Museum of Science and
Technology in Italy, where the models are encased in
glass or operated only by staff members, the Virtual
Leonardo Project, an online version of the museum,
encourages visitors to "touch" each exhibit, which
thereby activates the animated functions of the piece.
(A) exhibit, which thereby activates
(B exhibit, in turn an activation of
(C) exhibit, and it will activate
(D) exhibit and thereby activate
(E) exhibit which, as a result, activates
A 和E 选项 og答案解释说which 没有先行词 exhibit不是么？逗号起了什么作用么？ 谢谢作者: steinlala 时间: 2011-9-5 20:43
