Conscious knowledge of rules does not help acquisition accor

Nowadays little knowledge __ to be a dangerous thing

A.seem

B.seemed

C.does seem

D.do seem

A.worry

B.worrying

C.worries

D.worried

A.help, cleans

B.help,clean

C.helps, cleaning

D.helps, clean

Tests provide grades, but they also let you know what you need to spend more time ______ and they help make your new knowledge permanent.

A、to study

B、study

C、studied

D、studying

“The biggest threat to our environment today is the way we, as human beings, see out environment” does not imply that ().

A、everything in the ecosystem is part of one complete whole

B、most people hold a wrong view on the environment

C、everything affects and is affected by its environment

D、people are not conscious of the importance of trees

A.Interesting

B.useful

C.permanent

D.deep

Thousands of lives will be ________ if help does not arrive in the city soon.

A at stake

B at ease

C at random

D at hand

What advice might Cartwright give to those who sometimes have had dreams?

[A] Lead your life as usual.

[B] Seek professional help.

[C] Exercise conscious control.

[D] Avoid anxiety in the daytime.

此题为判断题(对，错)。

Artificial intelligence (AI) ,an interdisciplinary field, is usually regarded as a branch of computer science, dealing with models and systems for the performance of functions generally associated with human intelligence, such as(71)and learning.In AI, knowledge-based system is an information(72)system that provides for solving problems in a particular domain or application area by drawing inferences from a knowledge base. Moreover, some knowledge-based systems have learning capabilities. Expert system (ES) indicates the knowledge-based system that provides for solving problems in a particular domain or application area by drawing inferences from a knowledge base developed from human(73). Some expert systems are able to(74)their knowledge base and develop new inference rules based on their experience with previous problems. The term "expert system" is sometimes used(75)with "knowledge-based system", but should be taken to emphasize expert knowledge.

A．inferring

B．reasoning

C．deriving

D．proving