在△ABC中，a=bsinA，则△ABC一定是（   ）

下列各句加点成语的使用，全都正确的一项是（   ）

①“苹果”公司最新发布的手机操作系统IO87，对原有操作方式进行了全面更新，这预示着“苹果”将改头换面 ， 真正告别乔布斯时代的风格。

②已发现的5000多个甲骨文字中大部分的字，或音不堪卒读 ， 或义不可明喻，或形不可构造，考释难度非常大。

③关乎社会建设的重大问题必须通过党委会集体讨论做出决定，如果个别领导干部师心自用 ， 那么后果将不堪设想。

④元好问认为，在人类对待野生动物的问题上，“天地之默默无亲”是大慈悲，人类的小恩小惠反是不仁。希望大家广而告之，众口铄金。

⑤一个人的佛村，光线疏朗，淡雨轻云，菱歌晚唱，徜徉其间，你一定会收获到月白风清般的惬意。

⑥互联网时代，社会快速发展，创客倍出，越是在这种时候，我们越要登高自卑 ， 脚踏实地。

下列各句中没有语病的一项是（   ）

下列各组烃的混合物，只要总质量一定，无论按什么比例混合，完全燃烧后生成的CO₂和H₂O都是恒量的是（   ）

根据要求将下面的短语组成两副七字对联，并填在相应的横线上。

芝兰绕阶  黄牛耕地  翠柳迎春  桃李满园

千里绿  春绣锦  万山金  座凝香

补写出下列句子中的空缺部分。

Heavy smog has returned to the skies of Beijing after a two-month break, with authorities ________ the pollution will remain due to unfavorable conditions.

下列表示错误的是(    )

在△ABC中，若acosB=bcosA，则△ABC的形状为．

Please e the theatre from the back door when the play is over.

Tell your friend not to take the pills _______ he may have health problems in the future, _______ it is too late.

下列化学术语或表示方法错误的是（）

在 中，已知 ，则 的形状一定是（    ）

足量铜与一定量浓硝酸反应，得到硝酸铜溶液和NO₂、NO的混合气体，这些气体与1.68LO₂（标准状况）混合后通入水中，所有气体完全被水吸收生成硝酸．若向所得硝酸铜溶液中加入3mol/L NaOH溶液至Cu²⁺恰好完全沉淀，则消耗NaOH溶液的体积是（   ）

选词填空（可变换形式）

阅读下面短文,在空白处填入1个适当的单词或括号内单词的正确形式。

    A young man and an old man were waiting for a bus. They (sit) next to each other. "What's that in your bag?" asked the young man,  (point) to a big bag beside the old man.  

    "Gold. There was nothing but gold, "answered the old man. The young man could not believe his own ears and was in great(surprising). Then he began to think about how to get the gold. The old man was very tired and it seemed that he could hardly keep his eyes open. After a while the old man  (lie) down on the chair and fell asleep.  

    The young man took the big bag gently and  (quiet). But when he was just about to run away, he found a corner of his fur coat was under the old man's body. Several times he tried to pull it out,  in vain. At last he took off his coat, thinking that the gold in the bag must cost far more than his fur coat.

    Worried but (delight), the young man ran out of the station as quickly as his legs could carry him, until he reached a place  he thought the old man couldn't find him. He stopped and quickly opened the bag but he just found a great many small stones  it. Then he ran back to the station (hurry) only to find that the old man was gone.

取一定质量的均匀固体混合物Cu、Cu₂O和CuO，将其分成两等份，取其中一份用足量的氢气还原，测得反应后固体质量减少3.20g，另一份加入1000mL稀硝酸，固体恰好完全溶解，且同时收集到标准状况下NO气体2.24L，则所用硝酸的物质的量浓度为（   ）

铋（Bi）在医药方面有重要应用．下列关于 Bi和 Bi的说法正确的是（   ）

短文改错

本文中共有10处语言错误,每句最多有两处.错误涉及一个单词的增加,删除和修改.增加:把缺词处加一个漏字符号(∧),并在其下面写出该词.删除:把多余的词用斜线(＼)划掉.修改:在错的词下划一横线,并在该词下面写出修改后的词.注意: 1.每处错误极其修改均限一词.2.只允许修改10处,多者从第11处不记分.

    Mr. Smith had a 8-year-old son named Tony, who enjoyed listening to music very much. So he bought a piano to Tony, hoping that he can become a famous pianist one day. The little boy put her heart into practising the piano day after day and seemed enjoy every minute of it. However, half a year later, he told his father that he was tiring of practising the piano. Heard this, Mr. Smith said, “Tony, it is one thing to be fond of listen to music, but it is another thing to perform skillful by yourself. You can never play the piano well even if you don't practise more.”

下列有关化学用语表示正确的是（   ）