气体和食物的共同通道( ) A．口腔 B．咽 C．喉 D．气管

阅读理解。

                                                    Ani-mazing Animation Contest

     Ani-mazing is proud to announce its second animation (动画片) contest to introduce new animation

talents to the world.Contest entries (参赛作品) will be shown at the West Coast Animation Exhibition

from September 20.The exhibition will last for a week.Winners will be determined by a group of

Animation Industry experts who will review every entry.The result will be announced on September 28,

2011, when the awards ceremony will be held at the world - famous Egyptian Theatre, in Hollywood.We

are also planning to have a number of programs leading up to September 28, so hopefully this second year

will be a" Week of Animated Shorts".

     Cash prizes ranging from $500 to $5,000 will be awarded, as well as giveaways such as animation

software packages, resort trips and computer equipment.

     Please review these guidelines before sending your entry in:

     1.There are no restrictions on animation technique, no age limits or education requirements.All animated

films must be more than one minute long.

     2.All entries must be original and have received no major award before submitting to Ani-mazing.Both

computer and hand animation is accepted.

     3.Keep in mind that your animation will be viewed by an all-ages audience. Ani-mazing reserves the right

to reject entries containing inappropriate subject matter.

     4.More than one entries is allowed, however, all entries must be the work of nonprofessionals.Time

limits may prevent us from exhibiting all of the entries received, so please choose one animation to be your

primary entry. 

     5.All entries must be handed in by July 30.If you have trouble making this deadline, contact us and we

will consider extending the deadline for you.

     6.Please send a copy of your animation, not the original.We will not be able to return media to you.

     7.Your entry MUST include your name, age, educational background, contact information, and length

of the animation.

1. Why will the animation contest be held?

A. To collect works for an animation exhibition.

B. To attract more people to a course.

C. To find new animation talents.

D. To increase people' s awareness about animation.

2. Which of the following meets the requirements of the contest?

A. An animation made by hand.

B. An animation lasting 50 seconds.

C. An animation winning an award last year.

D. An animation downloaded from the Internet.

3. What is the deadline for entry?

A. September 27.

B. September 20.

C. July 30.

D. September 28.

（10分）古代的炼金术士们认为通过高温炼制可将某些廉价的金属转化为贵重金属银或金，并在实际操作中得到了貌似黄金的“药金”。操作方法是将炉甘石（含ZnCO₃）、赤铜（含Cu₂O）和木炭混合加热。已知多数碳酸盐受热分解为两种氧化物。

（1）写出上述制取“药金”过程的有关化学方程式：________________________________________________________________

（2）“药金”的主要成分是_______________，根据现代化学观点，你认为“通过高温炼制可将某些廉价的金属转化为贵重金属银或金”的想法可以实现吗？___________，理由是__________________________________________

（3）现代社会中还不时有人被用“药金”制成的“金元宝”、“金首饰”等欺骗而造成巨大损失，如果是你面对这种情况，如何用较简单的方法来确定它是假的“金元宝”、“金首饰”_______________________________________________________

填料装置发热和严重泄漏的原因有哪些？

矿井瓦斯最易积聚的地点之一是采煤工作面（）。

A、进风巷

B、回风巷

C、上隅角

D、下隅角

男性，37岁，因腰_4、5椎间盘突出症入院行腰椎间盘摘除术，术前表现为右下肢疼痛、麻木，术后疼痛消失，术后1周开始出现腰部剧烈疼痛、活动受限，但无双下肢疼痛，体温在38℃左右。

该患者体检重点应是

A．伤口情况

B．胸片

C．血常规检查

D．血培养

E．尿常规