具有广谱调脂作用的药物是 A．洛伐他汀 B．烟酸 C．苯扎贝特 D．普罗布考 E．考

Directions: Complete the following passage by filling in each blank with one word that best fits the context.

     Our school is quite famous for its long history. It was founded in the early 1907s. It is a good place   1   we can prepare ourselves well for the future. We have many wonderful teachers   2   are always ready to offer help.   3   we pay a lot of attention to how well we do in lessons, achieving high scores is not the only reason to study. The teachers encourage us to try   4   new ideas and ask questions. With their help we have developed all kinds of interests   5   both Arts and Science. We can choose to join any school clubs they are interested in. We can   6   choose the subjects that we want to study. Last term I selected American literature   7   I wanted to learn about famous American writers. This term I chose to attend music classes because my father bought me a piano as   8   birthday present.

—Whose model plane is it?   —It’s Jack’s. He made it by _______.

A. he   B. himself  C. his

(16分)有关催化剂的催化机理可以从“乙醇催化氧化实验”得到一些认识，某老师设计了如图装置(夹持装置仪器已省略)，其实验操作为：先按图安装好，先关闭活塞a、b、c，在铜丝的中间部分加热片刻，然后打开活塞a、b、c，通过控制活塞a和b，而有节奏(间歇性)通入气体，即可在M处观察到明显的实验现象。试回答以下问题：

(1)检验装置A气密性的方法是                                               ，

A中发生反应的化学方程式为                                             ，

C中烧瓶常常浸在70～80℃的热水中，目的是                                。

(2)M管中可观察到的现象为                                               ，从中可认识到该实验过程的催化剂是     。

(3)若试管F中用水吸收产物，则要在导管m、n之间接上G装置，其连接方法是(填G装置中导管的代号)：m接______、_______接n，G装置的作用是                 ；若产物不用水吸收而是直接冷却，应将试管F浸在             中。

质量与能量可以相互转换（）

A.能量改变和质量大小有关

B.能量改变和光速有关

C.能量改变和质量变化成反比

D.能量改变和质量变化成正比

E.能量改变和质量变化无关

烧结过程对强化烧结作用最大的熔剂是什么（）。

A.石灰石

B.白云石

C.消石灰

D.生石灰