将正方形ABCD沿对角线BD折成直二面角A－BD－C，有如下四个结论： ①AC⊥

发布时间：2017-05-16 06:18 │ 来源：www.tikuol.com

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问题：

将正方形ABCD沿对角线BD折成直二面角A－BD－C，有如下四个结论：

①AC⊥BD； ②△ACD是等边三角形；

③AB与平面BCD成60°的角； ④AB与CD所成的角是60°.

其中正确结论的序号是________．

考点：点到直线、平面的距离

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下列是关于农作物秸杆利用观点，不正确的是（　　）

A．在田间就地焚烧，灰分还田经济划算

B．可以作为造纸、纤维板的原材料

C．铡碎掩入田中，有机物缓慢分解，但仍有不少浪费

D．沼气发酵或饲喂牲畜后再作肥料还田

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以下关于企业人力资源配置表述正确的是（）。

A.配置的方式可分为空间上和时间上的优化配置

B.配置的性质可分为数量配置和质量配置

C.配置的称为可分总量与结构配置

D.整体配置是实现员工与岗位的优化配置

E.配置的范围可分为个体配置与整体配置

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完形填空。
I used to hate being called upon in class mainly because I didn't like attention drawn to myself. And__1__otherwise assigned(指定)a seat by the teacher, I always__2__to sit at the back of the classroom. All this__3__after I joined a sports team. It began when a teacher suggested I try out for the basketball team. At first I thought it was a crazy__4__because I didn't have a good sense of balance, nor did I have the__5__to keep pace with the others on the team and they would tease me. But for the teacher who kept insisting on my "__6__for it", I wouldn't have decided to give it a try. Getting up the courage to go to the tryouts was only the__7__of it! When I first started__8__the practice sessions, I didn't even know the rules of the game, much__9__what I was doing. Sometimes I'd get__10__and take a shot at the wrong direction-which made me feel really stupid.__11__, I wasn't the only one "new" at the game, so I decided to__12__on learning the game, do my best at each practice session, and not be too hard on myself for the things I didn't__13__"just yet"． I practiced and practiced. Soon I knew the__14__and the "moves". Being part of a team was fun and motivating. Very soon the competitive__15__in me was winning over my lack of confidence. With time, I learned how to play and made friends in the__16__-friends who respected my efforts to work hard and be a team player. I never had so much fun! With my__17__selfconfidence comes more praise from teachers and classmates. I have gone from "__18__" in the back of the classroom and not wanting to call attention to myself,__19__raising my hand-even when I sometimes wasn't 100 percent__20__I had the right answer. Now I have more selfconfidence in myself.
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治疗失眠属肝火扰心的随证配穴为（）

A.心俞、丘墟

B.期门、阳陵泉

C.心俞、脾俞

D.行间、侠溪

E.胃俞、足三里

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下面是某求助者的MMPI测验结果。

从临床量表得分来看，可以判断该求助者主要表现为（）。

A．抑郁、悲观

B．偏执、多疑

C．内向、胆小

D．幻觉、妄想

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