56~58 .ABA 59-62.BCBC 63~65.ACD 66~68.DDC 69~72.CDBD 73.She is 12 years old. 74.She took up building rocket models. 75. Age is not a problem if we are curious and keep trying.
Changes Around Us In the past few years, great changes have taken place around us. People used to travel to nearby places only. Now they can easily go abroad or visit far‑away places. People took buses or green trains for long trips before. But now they can drive cars or take planes to save much time. For students, we only read textbooks in the past. Now we do more wide reading and join many different activities. I am happy with these changes. Our life is getting much better than before.纵观这套英语，难易分明。单选和完形比较容易，阅读理解中等偏难，书面表达较好。
