用所给单词的正确形式填空。

1．According to a recent research,dolphins are much more _______ than other animals.

   (intelligence)

2．It's scary to stay in a house alone in _______ darkness. (totally)

3．Most of the time,women are forced to make a _______ between family and career.

  (choose)

4．The mother was amazed by the little kid's _______ idea. (create)

5．_______ speaking,it's worth all the efforts. (person)

6．This is a painting full of _______ and hope. (imagine)

7．The earth is nothing but a very small planet in the endless _______. (universal)

8．The earliest _______ in China is abacus. (calculate)

9．_______ arose about exactly how to spend the money. (disagree)

10．The _______ progress is changing our life. (technology)

隧道的附属建筑物包括通风、防排水、安全设备等，其作用是( )。

A．确保行车安全、舒适
B．保持洞内能见度和清洁空气
C．保持洞内路面干燥
D．防止隧道渗水和行车舒适