单项选择题

Researchers have discovered that （） with animals in an active way may lower a person’s blood pressure.

A．interacting
B．integrating
C．migrating
D．merging

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单项选择题
America has now adopted more （） European-style inspection systems, and the incidence of food poisoning is falling.

A．discrete
B．solemn
C．rigorous
D．autonomous
单项选择题
The Beatles, the most famous British band of the 1960s, traveled worldwide for many years,（） cultural barriers.

A．transporting
B．transplanting
C．transferring
D．transcending
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