Meaning of the metaphor this house is a closet?

Which of the following is not true about using your local library as a resource while doing research? a. searching library catalogs can you narrow your topic, as well as give you ideas about what resources are available to you. b. most libraries now have searchable databases and many other resources accessible online. c. using the library as a resource is a bit more time consuming, because it cannot be done from home. d. all of the above statements are true.

What does twain find ironic and hypocritical about human patriotism?

Who first discovers the alien cylinder on horsell common