单项选择题
The incredible precision of the equipment is ______ to the mechanical skill of the engineers who built it.
单项选择题 Bread and butter ______ popular with the westerners.
单项选择题 It is universally acknowledged that he is ______ a musician than his tutor.
单项选择题 Among the first to come and live in North America ______, who later prospered mainly in New England.
