更多"() are two lines of verse, usually "的相关试题:
[单项选择]The early railroads were connected short lines in the existing arteries of transportation: roads, turnpikes, canals, and other waterways.()
A. short lines that connected
B. those short fines connected
C. connected by short lines
D. short connected lines
[单项选择]There are usually at least two ______ of looking at every question.
A. means
B. directions
C. views
D. ways
[填空题]Usually, there are two reasons to pursue scientific knowledge: for the
sake of the knowledge itself, and for the practical use of that knowledge.
Because this second aspect of science effects the lives of most people, (1) _____
it is much more familiar than the first. Knowledge must be gained,
however, after it can be applied, and often the most important technological (2) _____
advances arise from research pursued for its own sake.
Traditionally, new technology has concerned with the construction (3) _____
of machines, structures, and tools in a relatively large scale. The (4) _____
development of materials for building bridges, skyscrapers or highways
is an example of this, as it is the development of the internal-combustion (5) _____
engine and the nuclear reactor. While such activities involve all sections
of the scienc