单项选择题

A．Its not as hard as expected.
B．It’’s too tough for some students.
C．It’’s much more difficult than people think.
D．It’’s believed to be the hardest optional course.
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单项选择题
A．Wait for a taxi.B．Buy some food.C．Go on a trip.D．Book train tickets.
A．Wait for a taxi.
B．Buy some food.
C．Go on a trip.
D．Book train tickets.
单项选择题
It can be concluded from the passage that________.
A．people should avoid doing important things during peak periods of lapses
B．hazards can be avoided when people do things they are good at
C．people should be careful when programming their actions
D．lapses cannot always be attributed to lack of concentration
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