单项选择题

Which of the following is difficult for robots to do at present

A．To assemble machines.
B．To do some kinds of cleaning.
C．To work as service men.
D．To tell that the corner where walls and ceilings meet goes in, not out.
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单项选择题
A serious outcome brought out by the shortage of resources is that ______.
A．many public institutions have to cut down enrollments of students
B．teachers are not qualified enough for satisfactory performance in classes
C．some institutions have to reduce the expenses on research
D．there is keen competition for resources and attention of faculty between public and private institutions
单项选择题
According to the passage, one of the causes fur the difficulties of American higher education is that ______.
A．the government has stopped giving public institutions as much financial support as it used to
B．America has always been encouraging young people to go to college
C．many public institutions have replaced private ones
D．the government only finances such researches as that of placing man on the moon
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