The illness from which Mary is suffering has now been __________ as hepatitis (肝火).

A. interaction

B. intervals

C. interruptions

D. interpretation

A. But for

B. Because of

C. By means of

D. Due to

A. transforming

B. transferring

C. altering

D. shifting

A. only human beings have problem-solving intelligence

B. a person' s memory is different from a computer' s in every respect

C. animals are able to solve only very simple problems

D. animals solve problems by instincts rather than intelligence

A. "in connection with"

B. "expressed by"

C. "consisting"

D. "by means of"

A. What would life be like without memory ?

B. Memory is of vital importance to life.

C. How is a person' s memory different from an animal' s or a computer' s?

D. What is contained in memory ?

A. To sell a bicycle for $

B. To get some money for old books at a garage sale.

C. To buy things you need or want.

D. To get paid for your work.

A. In the Philippines.

B. In China.

C. In Africa.

D. We don' t know.

A. Because it would be easier to put them together and carry them around.

B. Because it would be lighter for people to carry them from place to place.

C. Because people wanted to make it look nicer.

D. Because people wanted to save the expensive metal they were made from.

A. Because they are easy to steal.

B. Because they are difficult for people to obtain.

C. Because they are not easy to carry around.

D. Because they themselves are expensive, too.