题目

   I like traveling. I have traveled to many places  61  I went to college, and my travel to Tibet impressed me  62  (deep). I took the train there with my friends and enjoyed the scenery all the way. When the train  63  (be) close to Tibet, I had a headache. Then I found  64   difficult to breathe and felt exhausted. I knew that all my  65  (symptom 症状) were called altitude（海拔）sickness. And it took me a few hours to get used to it.     Tibet,  66  (know) as the “Roof of the World”, has  67  great many world-famous places of interest  68  (inc下面现象属于吸热过程的是（ ）（1）滴在桌面上的墨水逐渐干了；（2）寒冷的冬天，戴眼镜的同学从室外逐渐走进暖和的室内，镜片突然蒙上一层小水珠；（3）刚剥去包装纸的冰棒周围冒“白烟”；（4）放在衣柜内的樟脑丸逐渐变小．A．（1）（2）B．（2）（3）C．（2）（4）D．（1）（4）