[Spock hesitates for a moment... he doesn't often tell people what he does unless they have prior knowledge...

No matter, he trusts this woman.]

I am the First Officer and head science officer on board the Starship Enterprise...I conduct research and undergo peaceable missions on many planets.

Though I am Vulcan, I am only half-Vulcan... my mother was human. I spent much of my time on earth because of her and the Academy where I underwent my education for Starfleet.

[If there has been any hint of past tense... well... Spock's eyes are a bit sad.]