[解析]
(1)A更年轻和更矮;B更老和更高;C更年轻和更高。根据My uncle is younger and taller than my father.(我叔叔比我爸爸更年轻和更高。)可知陈洁的叔叔比陈洁的爸爸更年轻和更高。故选:C。
(2)A乘火车。B乘出租车。C乘飞机。We went there by plane on Saturday afternoon.(周六下午,我们乘飞机去了那里。)可知陈洁的家人乘飞机去的上海。故选:C。
(3)A他们一起拍照。B他们吃了一顿大餐,聊了很多话。C他们一起看了一场精彩的演出。根据We had a big dinner together and talked a lot at that night.(那天晚上我们一起吃了一顿丰盛的晚餐,聊了很多。)可知在星期六晚上他们一起吃了一顿丰盛的晚餐,聊了很多。故选:B。
(4)A陈洁的妈妈;B陈洁的爸爸;C陈洁。根据In the afternoon,I felt a little tired.(下午,我感到有点累了。)可知是陈洁感到有点累了。故选:C。
(5)A陈杰在上海的旅行很愉快。B陈杰的家人在旅途中没有买任何礼物。C陈杰一家在上海住了三天。根据What a wonderful trip!(多么美妙的旅行啊!)可知陈洁在上海的旅行很愉快,所以A项是正确的。故选:A。