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如图,△ABC中,∠ABC、∠ACB的三等分线交于点E、D,若∠BFC=120°,∠BGC=102°,则∠A的度数为 

在苏德战争关键时刻的一场战役中,斯大林发表讲话:”今天是我们在严重条件下来庆祝十月革命24周年。.......我们暂时失去了一些区域,敌人已经进犯 到门前。“随后战场形势迫使德军进攻重点转向南方。这次战役是(   )

A . 莫斯科战役 B . 库尔克斯战役 C . 斯大林格勒战役 D . 列宁格勒战役
长方形、正方形和平行四边形都是轴对称图形。(   )
There is________ encyclopaedia on the desk.      encyclopaedia is very thick.
A . a, The B . an, The C . the, A D . the, An
I         the Internet for two hours last night, so I am very sleepy now.
A . use B . am using C . used D . use
计算(2y-x)(2y+x)的结果是(    )

A . 4y-x B . 4y+x C . 4y2-x2 D . 2y2-x2
下图为阿拉斯加半岛原油输送管道和热棒金属支架示意图。热棒下部为液氨蒸发段,上部为氨气冷凝段。当冷凝段温度低于蒸发段温度时,蒸发段液氨吸热汽化上升,在冷凝段氯气散热液化后回到蒸发段,循环反复。图中“热棒”的主要功能是(   )

A . 降低输油管温度 B . 防止地下冻土融化 C . 加快地热能散失 D . 吸收地面辐射热量
球形在各个方向都可以看成拱形,这使得它比任何形状都要

选字填空。

辫    辩    辨    瓣

子    花    别    争

阅读以下甲乙两首诗词,完成下列小题。

(甲)酬乐天扬州初逢席上见赠

刘禹锡

巴山楚水凄凉地,二十三年弃置身。怀旧空吟闻笛赋,到乡翻似烂柯人。

沉舟侧畔千帆过,病树前头万木春。今日听君歌一曲,暂凭杯酒长精神。

(乙)贾生

李商隐

宣室求贤访逐臣,贾生才调更无伦。

可怜夜半虚前席,不问苍生问鬼神。

  1. (1) 甲诗中用“闻笛赋”“烂柯人”两个短语用典,表达了对和人事全非、世事变迁的怅惘之情。
  2. (2) 甲乙两诗的作者都遭遇人生挫折,仕途多年不顺,请结合“今日”“可怜”两句简析他们在诗歌中寄寓的内心感受。
关于电流,下列说法中正确的是(    )

A . 通过导线截面的电量越多,电流越大 B . 电子运动的速率越大,电流越大 C . 单位时间内通过导体截面的电量越多,导体中的电流越大 D . 因为电流有方向,所以电流是矢量
将边长为 的正方形 沿对角线 折起,使得 ,则异面直线 所成角的余弦值为(    )
A . B . C . D .
课内划线词解释。

①一作气(《曹刿论战》)

②长跪而之(《唐睢不辱使命》)

③时时而进(《邹忌讽齐王纳谏》)

④身坚执锐(《陈涉世家》)

把词语补充完整。再根据意思选一选。

西      手

      惊

①由于害怕慌张,一下子不知怎么办才好。

②四处张望。

③双手舞动,双脚也跳起来,形容高兴到极点。

南北半球的分界是(   )
A . 180°经线 B . 160°E经线 C . 0°经线 D . 0°纬线
小刚用干电池、导线、开关、小灯泡组装了一个电路。可是小灯泡不亮,电路出故障了。故障原因可能是灯座坏了,也可能是其他原因。你能再写出一条故障原因吗?
构成原子的粒子有哪几种?
阅读下面短文,掌握其大意,从每题所给的A、B、C、D四个选项中,选出最佳选项。

    It's a small gas station that has snacks, drinks, cigarettes, and candies. The young man behind the counter knows his 1by name and what they usually want to buy. He treats children and adults with equal2He reads science fiction behind the counter when business is3

    One day, three people rushed in and grabbed food off the shelves as fast as they could,4not planning to pay for it. He hit the “panic button”, then went over the counter and 5the front door. It was obvious they were homeless, and equally obvious that they weren't going6with the food. They7the food and simply crowded together in panic— knowing the police were8 the way.

    Imagine what they must have felt like when they were told they didn't have to steal if they were that9“We have food in the back, expired (到期) but still 10to eat. If you need food, you11have some.”

    They were told to12what they had dropped and put it back, and then asked to sort out the mess. They were doing just that13the police arrived. The officers were told the situation was under control and the police were no longer14.

    This wasn't what they had 15.They were being treated as human beings who could right the wrong they'd done. Shocked, they quickly followed orders to take turns and use the restroom to clean up themselves.

    Soon three 16people walked out with all the17their arms could hold. They were18that, if they needed to come back again, they were to ask and not just grab.

    And then the young man went back to read until the next customer came in. He would be the 19 person in the world to say he was a hero. But he gave three people something they were badly in need of —a20 amount of self-respect and a little bit of hope.

(1)
A . friends B . neighbors C . customers D . passengers
(2)
A . respect B . pride C . wisdom D . patience
(3)
A . slow B . busy C . heavy D . crowded
(4)
A . bravely B . reasonably C . hardly D . obviously
(5)
A . opened B . locked C . closed D . broke
(6)
A . nowhere B . somewhere C . anywhere D . everywhere
(7)
A . hid B . lifted C . swallowed D . dropped
(8)
A . in B . on C . off D . by
(9)
A . frightened B . curious C . angry D . hungry
(10)
A . safe B . easy C . sweet D . able
(11)
A . must B . can C . should D . need
(12)
A . bring up B . hand out C . pick up D . hand in
(13)
A . when B . after C . until D . since
(14)
A . popular B . necessary C . reliable D . important
(15)
A . wanted B . planned C . expected D . admired
(16)
A . dirtier B . cleaner C . cleverer D . quicker
(17)
A . money B . cigarettes C . drinks D . food
(18)
A . reminded B . warned C . ordered D . persuaded
(19)
A . first B . last C . best D . worst
(20)
A . large B . fair C . small D . full
计算()•()÷(﹣)的结果是 

据英国路透社今晨报道,美国当选总统特朗普称,在其上任第一天,就要执行将美国从跨太平洋伙伴关系协定(TPP)中撤出的命令。此前,现总统奥巴马曾向特朗普喊话,“选举跟治国是两件事”,意在继续推动TPP。一战前后也有一个国家的言行与当今美国是一样的矛盾,体现国家利益至上原则。它是(    )
A . 英国 B . 法国 C . 德国 D . 意大利
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