【简答题】阅读理解。 Manhattan is the heart of New York City. It is really an island, which is only 13 miles long and 2 miles wide. Seen from the air, it look like a long finger. From the sea it is just like a pictu...
【单选题】put computers to practical business use, but below the surface it is the heart of an(22) - the kernel - that provides the technical wizardry to juggle multiple programs, connect to networks and store(...