单项选择题

The author is （） about the future development of robots.

A．worded
B．pessimistic
C．optimistic
D．indifferent

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单项选择题
It can be inferred from the passage that all the work on the assembly line was （）

A．dangerous and dull
B．harmful but beneficial
C．repetitive and dull
D．easy but tiring
单项选择题
If someone works around the clock, it means （）

A．he likes his job
B．he works non-stop
C．he is very punctual
D．he repairs clocks and watches
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