单项选择题 Dublin will no longer ______its constitutional claim to Northern Ireland, as it had promised to do on Sunday.

单项选择题 Look, if you were interested in science, it would be like having a chance to rub shoulders with people of Einstein's ______.

单项选择题 Congress shah make no law respecting an establishment of religion, or prohibiting the free exercise______; or abridging the freedom of speech, and the right of the people peaceably to assemble.