单项选择题

A．It was established on December 11, 1926.
B．It was one of the earliest interstate highways.
C．It started from Oklahoma and ended in California.
D．It mainly crossed deserts, mountains, valleys and rivers.
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单项选择题
What can we learn from the recent pilot study of the treatment（）

A．The treatment can be used widely someday.
B．The treatment will destroy the immune system.
C．The current drug can increase a patient’s risk of cancer.
D．The result of the study doesn’t satisfy the researchers.
单项选择题
What do we know about the new drug treatment（）

A．It is developed by researchers in US.
B．It can extend the life of implanted organs.
C．It is independent of defense mechanism.
D．It can improve patients’ health.
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