视网膜母细胞瘤USG重要的声学特征为()A．玻璃体内实质性光团 B．光与球壁紧密相连

1. Keeping calm is the most important thing you should remember in time of e__________.

2. Tom d________ to be praised by the boss as he has worked so hard that nobody can imagine.

3. The news of Gaddafi's death was b_______ over the radio throughout the world immediately.

4. Ann was very annoyed at his rude b__________ at her birthday party.

5. I don't understand what you are saying. Would you please give me an __________(解释)?

6. After a few days of fever, she began to ________ (恢复) from it.

7. People often work out outdoors on the weekend and do something ________(挑战性的).

8. George likes living in Australia, where he had an _______ (令人愉快的) time several years ago.

9. She g_______ from Luhe No. 1 Middle School last July and then went to America for further study.

10. I felt ________ (尴尬的) about what a mess my house was.

What do you think of the suggestion ________ we organize a football club?

A．which

B．whether

C．that

D．what

奴隶社会时期行商使用的广告形式主要是（）。

A、口头叫卖和器具音响广告

B、实物广告

C、招牌和幌子

打开“模拟试卷七”文件夹中的“汉字录入.doc”文件，按照题目上的内容输入汉字。
回溯古代科技的产生，我们可以看到，大部分的科技成果都是因为有一定的实践需要而产生的，如/L何学是因为对丈量土地的需要而产生的，天文观测最初也是用宋为农业耕种提供时间上的参考的，因而造成了数学偏重于解题而天文则附属于历法的局面。这样，这种原始的科技的起源为实用服务的思想一直在影响着随后的科学研究，以致从古代到近代中国科学技术的发展都围绕在实际生产的需求或是为了王权的统制的需求周围。
而在西方国家，那些著名的自然科学家们，如亚里士多德和柏拉图等，他们从事学术活动是没有什么功利目的的，只是纯粹的理论的研究，这样，在没有应用限制的条件下，西方的社会科学技术发展就得到了很好的推动。对比中西方，在科技的研究范围上就产生了一定的差异。

令重每令纸张的总重量，单位是kg（公斤）。1令纸为（）张

A.100

B.200

C.500

D.1000