discussion about the teachers' new roles in the new era.

A.explanation

B.impression

C.exhibition

D.discussion

What is the discussion mainly about？

A．The evolution of interstellar gas clouds.

B．The lifetime of stars.

C．The quality of main-sequence stars.

D．The formation of stars.

What is the discussion mainly about？

A．The history of large corporations

B．The regulation of business by government

C．Why corporations have so much power

D．Ways that governments spend money

A.painstaking

B.contemplate

C.nestle

D.enact

What is the discussion mainly about？

A．The discovery of the Alpha Centauri system

B．The reason solar systems are confused with galaxies

C．The vast expanse of the universe around us

D．The model at the National Air and Space Museum

A．accident

B．accidental

C．accidents

D．accidentally

Which of the following is true about the research under discussion？

A．It was conducted by the Institute for the American Values headed by David Blankenhorn.

B．It was sponsored by the Coalition for Marriage, Families and Couples Education:

C．Its subjects were chosen from a national database based at the University of Chicago.

D．Its report will be included in the schedule of the "Smart Marriage" conference.

What is this discussion mainly about？

A．Success in college

B．How to read faster

C．Academic study skills

D．Research on college students