[单项选择]According to the news, US President Barack Obama made a solemn trip to Delaware Tuesday, to honor the troops killed in a helicopter crash in______.
A. Afghanistan
B. Iraq
C. Kosovo
D. Delaware

[单项选择]

Senator Barack Obama likes to joke that the battle for the Democratic presidential nomination has been going on so long, babies have been born, and they’ re already walking and talking. That’s nothing. The battle between the sciences and the humanities has been going on for so long, its early participants have stopped walking and talking, because they’re already dead.
It’s been some 50 years since the physicist-turned-novelist C. P. Snow delivered his famous "Two Cultures" lecture at the University of Cambridge, in which he decried the "gulf of mutual incomprehension", the "hostility and dislike" that divided the world’s "natural scientists", its chemists, engineers, physicists and biologists, from its "literary intellectuals", a group that, by Snow’s reckoning, included pretty much everyone who wasn’t a scientist. His critique set off a frenzy of desperation that continues to this
A. posing a contrast
B. justifying an assumption
C. making a comparison
D. explaining a phenomenon

[单项选择]Barack Obama was born to a white American mother, Ann Dunham, and a black Kenyan father, Barack Obama, Sr. , who were 67 young college students at the University of Hawaii. When his (68) left for Harvard, Barack and his mother stayed behind, and his father (69) returned alone to Kenya, where he worked as a government economist. Barack’s mother (70) an Indonesian oil manager and moved to Jakarta when Barack was six. He later (71) Indonesia as simultaneously lush and a harrowing (72) to tropical poverty. He returned to Hawaii, where he was (73) up largely by his grandparents. The family lived in a small apartment--his grandfather was a furniture salesman and an unsuccessful insurance agent and his grandmother (74) in a bank--but Barack managed to get into Punahou School, Hawaii’s top prep (75) . His father wrote to him regularly but, though he traveled around the world on official (76) for Kenya, he visite