The idea that knowledge is dangerous are deeply embedded in our culture.

单项选择题Among various thing in life, friendships and freedom are what he cares most about.

单项选择题Whatever new technology is introduced, it is not for scientists to make moral or ethical decisions.

单项选择题Autumn’s parents didn’t permit her to date and insisted Autumn（）Japanese school on Saturdays.

A.attend
B.attends
C.attending
D.to attend

单项选择题According to the passage, why is light coloring an advantage to large desert animals?

单项选择题TCP IP application layer protocols include the following except ( ).

单项选择题A backup program ( ).

单项选择题( ) are collections of two or more connected computers.

单项选择题We abbreviate Virtual Private Networks to ( ).

单项选择题A traditional private WAN can be ( ) to build and manage.

单项选择题To access the Web, users require a ( ) ,which is the software program used to access the World Wide Web.browser