单项选择题

After years of research, Charles Drew devised a procedure for preserving plasm

A． transportingB. savingC. reusingD. labeling
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单项选择题
The speaker went on and on, ______ to his listeners' obvious boredom.
A．obligated
B．obsessive
C．obvious
D．oblivious
单项选择题
Villagers and those newly arrived from Europe, fed up with terms of employment and tenancy in the rural areas, took advantage of cheap modern transportation to move into the cities.
A．discontented with
B．acquainted with
C．furnished with
D．favoured with
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