The international situation has been growing _____ difficult

A great deal has been done to remedy the situation.

A．maintain

B．improve

C．assess

D．protect

A. of

B. with

C. for

●The OSI (68) model，sometimes also called ISO or 7 layers reference model for communication.has been developed by the International Standards Organization in early 1980's.

(68) A．referent

B．reference

C．referance

D．refering

With pollution becoming an international problem, environment protection has been handled with greater care around the world. (翻译)

A.has been put

B.have been put

C.being put in

D.to.be put in

For many years, people electric cars. However, making them has been more difficult than predicted.

A．had dreamed of

B．have dreamed of

C．dreamed of

D．dream of

China Calls for Unified International Rules Against Internet Crime

Cyber security has always been a serious issue as the Internet industry is ever growing. Nowadays, people can easily connect to the Internet with a simple click of a mouse. But the global network can be easily destroyed by a single leak. The world is facing a difficult situation in keeping web security.

Currently, there are no unified international rules for maintaining Internet security. China has called for unified international rules against Internet crime. Last year China and some other countries handed in a draft Code of Conduct on Information Security to the UN.

World leaders and experts discussed the possible Internet threats facing the world. They agreed that the only way to deal with Internet security threats was to trust each other and strengthen cooperation. The threats cannot be solved by any one country alone. And for these reasons, countries would have a greater chance of trusting each other in dealing with such threats.

Though great efforts were made to issue common regulations for the Internet, few results have been achieved yet. There's still a long way to go for unified global Internet security rules and regulations.

26. Maintaining web security is () for the world.

A. easy

B. a piece of cake

C. difficult

27. There are () to maintain cyberspace security.

A. no unified international regulations

B. unified international regulations

C. worldwide unified regulations

28. The only way to deal with cyber security threats was to()

A. depend on China and the United Nations

B. strengthen international cooperation and trust each other

C. ask world leaders and experts for help

29.().results have been achieved in terms of common regulations for the Internet.

A. A lot of

B. Few

C. Good

30.()summited a draft Code of Conduct on Information Security.

A. China only

B. The United States

C. China and some other countries

A、to

B、by

C、at

D、with

________ difficult the situation was, we managed to survive.

A：How

B：However

C：What

D：When

The OSI(66)model, sometimes also called ISO or 7 layers reference model for communication, has been developed by the International Standards Organization in early 1980's.

A．referent

B．reference

C．referance

D．refering