填空题

S2. What are the things the author think teachers should do but haven’t done______.

【参考答案】

Allowing children to judge their own work
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单项选择题
According to the passage, virgin-soil epidemics can be distinguished from other catastrophic out- breaks of diseases in that virgin-soil epidemics______.[A] recur more frequently than chronic diseases[C] usually involve a number of interacting diseases[B] involve populations with no prior exposure to a disease[D] are less responsive to medical treatment than are other diseases
A．According to the passage, virgin-soil epidemics can be distinguished from other catastrophic out- breaks of diseases in that virgin-soil epidemics______.
B．recur more frequently than chronic diseases
C．involve populations with no prior exposure to a disease
D．usually involve a number of interacting diseases
E．are less responsive to medical treatment than are other diseases
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A．They can be used to do business with people.B．They can be used to express all kinds of feelings.C．They can be used to deliver all the messages in our life.D．They can be used to convey our most important messages to people.
A．They can be used to do business with people.
B．They can be used to express all kinds of feelings.
C．They can be used to deliver all the messages in our life.
D．They can be used to convey our most important messages to people.
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