阅读理解

    In a time when ivory poaching(偷猎)has gotten so bad that it threatens to wipe out several animal species, a young Dutch designer is creating "egalitarian(平等主义)jewelry" made of our very own ivory—teeth.

    Lucie Majerus got the idea for her "human ivory" collection after having her wisdom teeth removed. She kept them and soon realized they would make great material for a jewelry collection. "Why wouldn't we value our own material instead of the precious material from other species? And what if we mine our own ivory and turn it into pearls?" she asks.

    Her own teeth became a ring, but in order to create a whole collection, she needed more material, and since having more of her teeth removed wasn't a very pleasant choice, she asked her dentist to save his patients' unwanted teeth. Most people choose not to keep their pulled teeth, so they are usually donated to dentistry schools. Majerus also received the lost teeth of two of her teachers at Design Academy Eindhoven, so she had a nice supply of human ivory to experiment with.

    To turn human teeth into attractive pieces of jewelry, Lucie Majerus first bleaches(漂白)them, and then uses a stone polishing machine to shape the teeth into various shapes.

    Majerus displayed her human ivory jewelry collection at this year's Dutch Design Week, and claims that people's reaction was mostly positive." Surprisingly, most people aren't frightened at the sight of the jewelry, but really like the idea, "Majerus told Fast Co Design." Some regret that they didn't keep their tooth at the dentist and some, who will have teeth taken out soon, are now looking forward to it. "

下列各句中，没有语病的一项是(    )

在三角形ABC中，acos（π﹣A）+bsin（ +B）=0，则三角形的形状为．

下列各句中词类活用不同于其他三项的是（   ）

32g Cu与一定量的浓硫酸加热后，恰好完全反应，反应方程式如下：Cu+2H₂SO₄ CuSO₄+SO₂↑+2H₂O问：

有两份铝粉，分别投入盐酸中（甲）和氢氧化钠溶液中（乙），在相同条件下产生氢气的体积相等，则甲、乙反应中转移电子的物质的量之比是（   ）

假设你是李华，你参加了某旅行社组织的一次旅游，你对其中的某些服务不满意。所以，你想就此事给该旅行社写一封投诉信。

内容包括：1.写信目的；2.不满之处；3.表达期望。

注意:  1. 词数100左右；2. 开头和结尾已经给出，不计入总词数。

Dear Madam / Sir,

    My name is Li Hua, who is a customer of your travel agency. ……

Yours sincerely,

Li Hua

将6.4g某物质R完全燃烧生成8.8gCO₂ ， 化学反应方程式是2R+3O₂  2CO₂+4H₂O则由此得出的下列结论，完全正确的一组是（   ）

①R由碳、氢两种元素组成

②R中碳元素的质量分数是37.5%

③6.4gR燃烧还生成了7.2gH₂O

④R的相对分子质量等于64．

根据短文内容, 从短文后的七个选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

    You probably think you will never be a top student. This is not necessarily so. however. Anyone can become a better student if he or she wants to. Here is how：

    Plan your time carefully. When planning your work, you should make a list of things that you have to do. After making this list. you should make a schedule of your time. First your time for eating, sleeping, dressing, etc. Then decide a good, regular time for studying. A weekly schedule may not solve all your problems, but it will force you realize what is happening to your time.

    Find a good place to study. Look around the house for a good study area. Keep this space, which may be a desk or simply a corner of your room, free of eeverything but study materials. No games, radios, or television. When you sit down to study, concentrate on the subject.

    Make good use of your time in class. Listening carefully in class means less work later. Taking notes will help you remember what the teacher says.

    Study regularly. When you get home from school, go over your notes, review the important points that your teacher is going to discuss the next day, read that material. If you do these things regularly, the material will become more meaningful, and you'll remember it longer.

    Develop a good attitude towards tests. The purpose of a test is to show what you have learned about a subject. They help you remember your new knowledge. The world won't end if you don't pass a test,so don, t be over worried.

    You will probably discover many others after you have tried these.

A. There are other methods that might help you with your studying.

B. Don't forget to set aside enough time for entertainment.

C. Take advantage of class time to listen to everything the teacher says.

D. No one can become a top student unless he or she works hard.

E. Maybe you are an average student.

F. Make full use of class time to take notes of what the teacher says in class.

G. This will help you understand the next class.

氕化锂、氘化锂、氚化锂可以作为启动火箭(CZ2F)的优良炸药。下列说法正确的是（   ）

After the long journey, the three of them went back home, ______.

¹⁵C﹣NMR（核磁共振）可用于含碳化合物的结构分析¹⁴N﹣NMR可用于测定蛋白质、核酸等生物大分子的空间结构，下面有关¹³C、¹⁵N叙述正确的是（   ）

阅读下面这首唐诗，完成各题。

折杨柳

张九龄

纤纤折杨柳，持此寄情人。

一枝何足贵，怜是故园春。

迟景那能久，流芳不及新。

更愁征戍客，容鬓老边尘。

阅读下面的文字，完成各题。

刚刚结束的全国两会上，“拓展‘智能+’”首次被写入今年的《政府工作报告》，作为未来的重要基础性技术，人工智能已连续三年出现在《政府工作报告》中。可以预见，随着人工智能、大数据的深入应用，生产生活的数字化转型是         。

人们在拥抱人工智能、迈向数字社会的同时，（   ）。只有         ， 研判和防范潜在风险，才能安享“智能+”的时代红利。

人工智能应用         ， 同时也带来安全风险隐患。根据一项调研显示，当前无节制滥用个人信息现象较为普遍。同时，人工智能及大数据场景下         的数据收集、专业化多样化的数据处理技术，使得信息主体难以了解、控制其信息是如何被收集和利用的。信息安全保护已经成为人工智能发展的重要课题。

名篇名句默写

I don't think that chair f enough to stand on. You'd better not risk that.

谢谢你的帮助，但我自己能做。

 Thank you for your help. But I can do it .

下列互为同位素的是（   ）

在△ABC中，若asinA=bsinB，则△ABC的形状为（   ）

They help us understand the physical sciences better and make us interested in the scientific (discover).