使用过的麻醉器械应如何进行清洁及消毒？

SECTION  C

Directions: Complete the following passage by using ONE word that best fits the context (8 points).

Dear Professor Liu Kai,

I want to thank you for offering me such useful advice during my research. I have completed my article about advertisements, and I’m quite satisfied    58    it. It has just been published on our school website. I never knew that advertisements were so interesting! The information I found will really help me to educate others. I hope that after they    59    my article, my schoolmates will understand that PSAs    60    intended to educate us about public welfare issues, and    61    commercial ads are meant to promote products or services. Before our talk, I did not think very much about how an advertiser might be trying to trick customers    62    buying a    63    or a service. Now I think I will be much smarter about what things to buy. Even if there are lots of exciting images and persuasive language. I will remember to think about the things I buy. I will also pay a    64    more attention to the nationwide public service ad campaigns because now I know how helpful they can be. I will encourage my friends    65     pay attention to them as well.

Thank you again for helping me find so much useful information!

Yours faithfully

Qian Lili

下列选项中，属于无效民事行为的有()。

A.对于自然人，行为人应具有完全行为能力

B.意思表示真实

C.不违反法律或者社会公共利益

D.必须采取书面形式

使ATP转化为cAMP所需要的离子是（）

A．氯

B．钾

C．镁

D．钙

蜜炙和油炙饮片含药屑杂质量是（）

A.1%

B.2%

C.5%

D.0.5%

创造性解决问题的过程阶段分为（）。

A.准备

B.酝酿

C.明朗

D.验证