单项选择题

How old was he when he began to suffer from diabetes

A．He was in his puberty.
B．He was in his childhood.
C．He was in his middle age.
D．He was in his sixties.
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单项选择题
The main idea of the passage is that______.
A．more students cheat on exams now than in the past
B．each era has a different concept of honour
C．there are still many individuals today who have a sense of honour
D．our society no longer values a sense of honour
单项选择题
It is implied rather than clearly stated in the first paragraph that______.
A．science is concerned about the natural world
B．technology is the result of applied science
C．a scientist is a cultivator of science
D．the scientific method is indispensable in the pursuit of science
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