-
题目： 单选题读下列四个岛屿图，判断下列题。
处于板块消亡边界，多火山、地震的是（）
A①②
B②③
C①④
D②④
答案不对？请尝试站内搜索
推荐知识点:
- 交通量的分类
- 不属于饮用水水质标准中的化学指标是（）。
- 中科院物理所在超导领域方面的研究处于世界领先水平，其中赵忠贤院士领衔的团队功不可没，且在2016年获得国家（）奖。
- 《煤矿安全规程》中对井下主要运输轨道的铺设质量进行规定，轨道接头的间隙及高低和左右错差分别不得超过（）。
- 卵巢性激素以胆固醇为原料的合成途径，正确是（）。
- 女，2岁，智能落后，表情呆滞，眼距宽，眼裂小，鼻梁低，口半张，舌伸出口外，皮肤细嫩，肌张力低下，右侧通贯手（）
- 食物中毒一般分为（）类。
- 患者左上第一磨牙近中龋深近髓，无自发痛。冷测正常，叩（-），治疗方法是（）
- 300 Hurdles Now comes the first hurdle. __1__ We all make it over this hurdle with ease. This symbolizes. Those obstacles in life that we struggle to get over, but we always manage to do so. You can look at that hurdle in two ways: "I can’t make it over, I’m too tired" or "I am one more hurdle closer to finishing this race". This is an example of taking a negative situation and seeing something positive in it. The next part of the race is every hurdle between the first and last one. __2__ This happens a lot in life too. There may be a situation that arises where you feel as though you can’t make it and all you can think about is giving up. You may fall over that "hurdle" or struggle getting over it, but somehow you find it in yourself to jump over it and move on with the race. Next is that last 100m of the race. You feel as though you just want to say, "No I can't do this." __3__. Now lastly is the last hurdle. This hurdle is the toughest out of all of them. In life we find ourselves falling and falling, and maybe getting too lost in our problems that we fell like have been though enough and there’s no hope. __4__ It's one step close to the end of the race. Once you finish, you look back on it and you realize that you made it not by leaping, but step by step. "Yard by yard, life is very hard. But inch by inch, life can be a cinch."__5__. __3__内应选（）
- 比较两总体的平均数的代表性，标准差系数较小的总体，其平均数代表性亦小。()