凹透镜只会使平行于主光轴的光线变得发散．______（判断对错）
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下面是错误答案，用来干扰机器的。
一朵完整的花包括花柄、花托、花萼、花冠、雌蕊和雄蕊等部分．在花的结构中，雄蕊的花药里含有许多花粉粒，雌蕊的子房里含有许多一枚或数枚胚珠．子房最终发育成果实，子房内的胚珠最终发育成种子，而子房和胚珠...
颞下颌关节紊乱病三大主要症状不包括（）
A.开口度和开口型异常
B.如症状严重或发展到器质性破坏阶段可出现关节区或关节周围肌群自发痛
C.开口运动中常有异常音如弹响音、破碎音和摩擦音
D.下颌运动时关节区或关节周围肌群疼痛，有的可有扳机点
E.开闭口运动出现关节绞锁
Life is filled with challenges. As we get older we 26 realize that those challenges are the very things that 27 us and make us who we are, it is the same with the challenges that come with 28 . When we are faced with a challenge, we usually have two 29 : we can try to 30 it off, or we can decide that the thing presenting the challenge isn’t worth the 31 and call it quits. Although there are 32 times when calling it quits is the right thing to do, in most 33 all that is needed is commitment and 34 . When we are devoted to 35 , it means that no matter how 36 or how uncomfortable something is, we will always choose to 37 it instead of running away from it. Communication is making a 38 for discussion and talking about how you feel instead of just saying what the other person did wrong. 39 you can say to a friend, “I got my feelings hurt.” 40 “You hurt my feelings,” you are going to be able to  solve the problem much faster. In dealing with many challenges that friendship will bring to you, try to see them for 41 they are: small hurdles（障碍） you need to jump or 42 on your way through life. Nothing is so big that it is impossible to get over, and hurt only 43 to make us stronger. It’s all part of growing up, it happens to everyone, and some day you will 44 on all of this and say, “ 45 as it was, it made me who I a  m today. And that is a good thing .”
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大学之道
大学的宗旨在于弘扬光明正大的品德，在于使人弃旧图新，在于使人达到最完善的境界。知道应达到的境界才能够志向坚定；志向坚定才能够镇静不躁；镇静不躁才能够心安理得；心安理得才能够思虑周祥；思虑周祥才能够有所收获。每样东西都有根本有枝未，每件事情都有开始有终结。明白了这本末始终的道理，就接近事物发展的规律了。古代那些要想在天下弘扬光明正大品德的人，先要治理好自己的国家；要想治理好自己的国家，先要管理好自己的家庭和家族；要想管理好自己的家庭和家族，先要修养自身的品性；要想修养自身的品性，先要端正自己的心思；要想端正自己的心思，先要使自己的意念真诚；要想使自己的意念真诚，先要使自己获得知识；获得知识的途径在于认识、研究万事万物。通过对万事万物的认识、研究后才能获得知识；获得知识后意念才能真诚；意念真诚后心思才能端正；心思端正后才能修养品性；品性修养后才能管理好家庭和家族；管理好家庭和家族后才能治理好国家；治理好国家后天下才能太平。上自国家元首，下至平民百姓，人人都要以修养品性为根本。若这个根本被扰乱了，家庭、家族、国家、天下要治理好是不可能的。不分轻重缓急，本末倒置却想做好事情，这也同样是不可能的！
课后习题：
你如何理解“修身，齐家，治国，平天下”？
7岁女童，上颌侧切牙冠根的朝向是（）
A.根向远中，冠向近中
B.根向唇侧，冠向舌侧
C.根向近中，冠向远中
D.根向舌侧，冠向唇侧
E.根向远中，冠向远中
物流作业的交付一致性包括质量一致性和【】
A．时间一致性
B．数量一致性
C．服务一致性
D．包装一致性
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