随着社会的发展，电脑已经普及到千家万户，网络生活成为人们重要的业余生活之一。请你写一篇80个单词左右的短文来介绍网络的优点和缺点。

   提示：

1、人们可以通过网络查阅有关资料、进行购物等。

2、人们可以在网上聊天或看电影，听音乐等。

3、很多青少年经常沉迷网络游戏，因而影响学习。

                                                                     

                                                                     

                                                                     

                                                                     

                                                                     

                                                                     

                                                                     

                                                                      

                                                                      

随着互联网的发展和普及，网络购物在中国也变得越来越普遍了，甚至已经成了我们日常生活的一部分了；相信同学们身边一定有不少同学已经通过网络进行购物了，比如淘宝网，京东商城等；但是网络购物究竟有何利弊呢？ 请写一篇短文，谈谈网上购物的好处与坏处。

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A group of graduates got together to visit their old university professor（教授）．They talked about their troubles in work and life．After the professor had offered his（A）guests a drink he went into the kitchen and returned with a（B）big pot（壶）of coffee and some cups--porcelain（瓷的），plastic，glass，crystal（水晶的），some plain-looking（普通的），some beautiful，some expensive．The professor let them（C）随便喝些咖啡．

When all his students had a cup in hand，he said：“I don’t know if you noticed it，but when all the nice-looking expensive cups were taken up，the plain and cheap ones were（D）_________ behind．While it is normal（非常的）for you to want only the best for yourselves，that is the source（根源）of your problems and stress（压力）．”

“（E）You really wanted coffee instead of the cup，but you went for the best cups and were eyeing each other's cups to see if they were better．”

Just think about this：Life is the coffee，and jobs，money and titles are the cups．（F）They are only tools to hold and contain Life，and do not change the quality（质量）of Life．Sometimes，by concentrating（集中）only on the cup，we（G）_______ to enjoy the coffee．So don't let the cups drive you，enjoy the coffee instead．

1．分别写出（A）和（B）处的同义或近义词_________ _________

2．将（C）处译成英语_____________________________________________

3．在（D）和（G）处分别填上适当的单词_________ _________

4．将（E）处句子进行改写What you really wanted was _________ the cup，_________ coffee．

5．指出（F）处在文中所指代的内容_________

1．当老师叫他的时候，他非常紧张，因为他不会回答这个问题。

He was _________ _________ when the teacher called his name，because he didn't the answer to the question．

2．他的生活方式和你的相同还是不同？

Is his life style_________ _________ _________ _________ or different?

3．在中国，自行车和公共汽车是最普遍的交通方式。

In China，bikes and buses are the________ ________ ________ ________ transportation．

4．去年夏天，我们去参观了长城。我们在长城上照相很是有趣。

Last summer，we went to visit the Great Wall．We had great fun _________ _________ on it．

5．你觉得这本书怎样？我觉得很一般。

_________ _________ you_________ _________ this book? It's just so-so

6．你不介意我把窗户打开肥?当然不介意。

_________ you_________ _________ _________ the window? Certainly not．

随着科学技术的发展，人们可以根据需求来改造生物的性状。如图是利用奶牛乳汁生产人类血清白蛋白的图解，据图回答：

(1) 在此过程中涉及到的细胞水平现代生物技术手段主要有_________________________。
(2) 在基因工程中，我们称②为________________，能实现②进入③的常用方法是________________。若在植物细胞工程中，则采用最多的方法是                    。
(3) 图中①一般经______________处理可以得到③，从③到④的过程中一般利用去核后未受精的卵细胞作为受体，而不用普通的体细胞。
(4) ⑦是⑥的后代，那么⑦的遗传性状和____________最相似。如果②的数量太少，常用_________来扩增。要实现⑦批量生产血清白蛋白，则要求③的性染色体是_____________。