阅读下面材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形式。

Alice: Mr. Black, this is Alice (speak). I'm calling to ask you if I can take the afternoon off today.

Black: Well, of course. can you tell me what the problem is, Alice?

Alice: OK, Mr. Black. My son is going to take part in a singing competition (hold)  in Washington tomorrow. He's got so many things to take he can't go there alone.

Black: So you want to take there in your minibus?

Alice: Yes. And as soon as I put him up in the hotel, I (drive) back.

Black: Well, that would be a (tire) journey. It's nearly 300 kilometers away and it will take you at least six hours (travel) to and from Washington. Why don't you stay there until you   (see) your son perform?

Alice: But I have two tomorrow morning.

Black: Don't worry. I'll tell Mary to take your classes instead. She's always willing to help.

Alice: That'll be nice. Thank you and give my thanks to Mary.

Black: You,re welcome.

名篇名句默写

将11.2g铁投入200mL某浓度的盐酸中，铁和盐酸恰好完全反应．求：

阅读下面这段文字，请用四个四字短语概括5G网络的特点。

在5G网络下，用户可以每秒钟下载一部高清电影，它的峰值下载速度可以达到20G/秒，未来我们只需要一个显示器就可以上网了。随着技术的发展，5G可以为更多的应用提供网络。5G网络可以用于无人驾驶、工业自动化等领域，这些领域要求在高速中保证及时的信息传递和及时反应，而5G网络能够达到1毫秒的时延，甚至更短，完全可以为高速运行提供支持。5G网络可以让某些智能设备一周或者一个月充电一次，这将极大地改善我们使用的体验，同时，为万物互联的大家庭增加更多的设备。

在△ABC中，根据下列条件解三角形，其中有一解的是（   ）

已知1.505×10²³个X气体分子的质量为8g，则X气体的相对分子质量是（　　）

阅读下面短文, 根据其内容写一篇60词左右的内容概要。

    On Sunday, the second day of Spring Festival, a man was killed after he fell into the tiger enclosure while trying to get into the zoo in Ningbo, East China's Zhejiang province, without paying for a ticket.

    The tragedy cost two lives, as the tiger was shot dead when zoo employees tried to rescue the man.

    As news of the incident spread, the majority of voices online blamed the dead man for the animal's death. Some said this was a sign that people are becoming more cold­hearted. But they are wrong. People have been displaying increasingly more enthusiasm for helping those in need and participating in charity work. In 2016, the China Charity Federation received donations of 18. 8 billion yuan ($2. 7 billion)in total, 46 percent more than the donations received in 2015, and they sent helping hands to one tragedy after another.

    People are just tired of forgiving those in the wrong. While sympathy is right, it has been abused too much. When somebody commits a crime, no matter how cruel the crime is, media outlets explain the criminal's miserable childhood and there are calls for forgiveness. When someone smokes in public, there are always people calling for tolerance.

    People are fed up and angry with lawbreakers escaping their due punishments in the name of forgiveness and tolerance.

    But going back to the tragedy at the wildlife park in Ningbo, the tiger's death shows the park was not well prepared for such emergencies. They did not have any tranquilizer guns that could sedate the tiger immediately and save the lives of both the man and the endangered animal.

    In the meantime, it is necessary to raise people's awareness that the animals in zoos and wildlife parks are not domesticated pets, and of the need for visitors to observe rules for their own safety.

    The man in the Ningbo incident paid for his fault with his life, but the tiger was killed for his fault, too. We sincerely hope no more tigers or humans will pay for such fault.

设△ABC，bcosC+ccosB=asinA，则△ABC的形状为（   ）

某元素的最高价氧化物分子式R₂O₅ ， 已知R的气态氢化物中含氢8.82%，则R的相对原子量约为　 ，R元素周期表中的位置为 

下列是几种粒子的结构示意图，有关说法不正确的是（　　）

在这个问题上你真是太对了。

You are about this problem.

如图所示，已知平面 平面 ，且 平面 ，则 的形状为（    ）

如图所示装置，室温下密闭容器内分别充入空气和H₂、O₂的混合气体在可移动的活塞两边，若将H₂、O₂的混合气体点燃引爆，活塞先左弹，恢复原温度后，活塞右滑停留于容器的中央，则原来H₂、O₂的体积比最接近于（   ）

①2：7   ②5：4   ③4：5   ④7：2．

语法填空

    The Vikings，a group of people ancestors came from Scandinavia, were the first Europeans (reach) America. In 982 AD, there were 10, 000 Vikings ( live ) in Iceland.

    According the old stories, Eric the Red was forced to leave Iceland because he had committed a murder, for which he got into trouble. He reached Greenland and then returned to Iceland and told people about Greenland. Later, he set sail again, with 25 ships, of which only 14 made to Greenland. A man called Biarni was hoping to join his father who was with Eric, he was blown off course and found himself in an ( know) land that no humans seemed to have stepped on，and from where he reached Greenland. In 1002，Eric the Red's son Leif followed Biami's directions and sailed to what is believed to be the coast of present-day Canada. He then sailed (far) south to an island now known as Newfoundland. We know about their deeds through stories which (write) down centuries later in Norway and Iceland. They are the first (record) we have of Europeans sailing to the Americas.

阅读下面这首宋诗，完成各题。

桂枝香 金陵怀古

王安石

登临送目，正故国晩秋，天气初肃。千里澄江似练，翠峰如簇。征帆去棹残阳里，背西风、酒旗斜矗。彩舟云淡，星河鹭起，画图难足。

念往昔，繁华竞逐。叹门外楼头，悲恨相续。千古凭高对此，谩嗟荣辱。六朝旧事随流水，但寒烟衰草凝绿。至今商女，时时犹唱，《后庭》遗曲。

Henry has come in his raincoat and gumboots ,_____for rain.

Tea is more traditional. But there seems to be lots of coffee shops opening n, so maybe things will change.

Their latest car has just gone into p for the Chinese market.

双曲线 与椭圆 的离心率互为倒数，那么以 为边长的三角形一定是（    ）

The police are looking for the (丢失的) child.