Such electron tubes ______ in a radio set are also found in a TV set.
A.that we use
B.as we use
C.as we use them
D.that we use them
A.may we use
B.we may use
C.we could use
D.did we use
We do not have adequate ______for the use of animals.
A. subsequents
B. substitutes
C. substances
D. substitutions
Learning to use computers is what we want to ______ from the program.
A.help
B.make
C.aid
D.benefit
In order to (attain) our objective, it is (essential) that we (will make) the best use of the limited resources (available).
A.attain
B.essential
C.will make
D.available
A.we can be
B.we will be able
C.will we be able
D.can we
We often use signs as well as words to tell people _________.
A.what to do
B.to do how
C.how to do
D.to do what
Not only did the Indians appear to lack a formal system of authority, but they also deeply hated any efforts to control their actions. All members of the tribes knew what was required of them by lifelong familiarity with the tasks of the area. These tasks tended to be simple, since the Indian's rate of social change was slow. Thus, although subgroups such as soldiers had recognized leaders, no real authority was required. Rather than giving direct orders (which were considered rough), members of the tribes would arouse others to action by examples.
It would be difficult, if not impossible, to carry out such a system in our own society. Most of us have grown up under one authority or another for as long as we can remember. Our parents, our teachers, our bosses, our government all have the recognized right under certain conditions to tell us what to do. The authority is so much a part of our culture that it is hard for us to imagine a workable society without it. We have been used to relying on authority to get things done and would probably be uncomfortable with the Indian methods of examples on a large scale.
Of course, the major reason why the Indian system would not be suitable for us is that our society is too large. The number of tasks that various members of our society have to perform. often under tight time and resource limitations could not be treated by the Indian system. In modern societies, the formal authority system is necessary to achieve any social objectives.
Which of the following statements is correct according to the passage?
A.From 1710 to 1780, European soldiers came across some Indian groups in the western Great Lakes.
B.European soldiers were quite friendly to the Indian groups.
C.The Indian groups had no leaders.
D.The Indian groups were friendly to each other without a formal leadership system.
To learn how to use the needles, it takes a person ______.
A.several months
B.a couple of weeks
C.a little time
D.almost one month
In order to apply pesticide spraying precisely, we can use infrared scanning to ______. ()
A.locate the problem areas
B.drew a color-coded map
C.measure the size of the affected area
D.estimate the damage to the crops