2.26小时=2小时26分．______．（判断对错）

不会引起视觉诱发电位变化的是（）。

A.遗传性强制性截瘫

B.进行性神经病性肌萎缩病

C.共济失调

D.多发性硬化

E.急性脑血管病

任务型阅读：阅读短文，根据短文内容补全所给的五个残缺的句子。每空只能填一词。

Movable Type(活字印刷)：By using Movable Type, books could be printed cheaply and easily, Bi Sheng invented Movable Type in China in the 11^th century.

Telephone: Alexander Graham Bell made the first telephone call in 1876. “Mr. Watson, come here. I want you,” he said to his assistant over the phone line. And with those famous words, the world was about to get much smaller.

Airplane: The Wright brothers made the first powered flight in 1903. Air travel has made the faraway places suddenly become closer.

Internet: When the Internet was created in 1969, only a few people knew about it. But more than 650 million people in the world use it now. The Internet has made information about anything easy to get.

小题1:Books could be printed cheaply and ___________ by using Movable Type.

小题2:The first telephone call was made in _____________.

小题3:Air travel has made the faraway places become ______________.

小题4:The Internet is now used by ______________ 650 million people in the world.

小题5:The above passage talks about the ____________ which change the world greatly.

公安工作是政策性与法律性相分离的一项工作。 ( )

HDPE单程转化率为（），LDPE单程转化率为（）。

人工呼吸应不间断地进行，要有节奏性。被抢救人有微弱的呼吸时应（）进行。

A.继续

B.停止

C.间断

D.断续