单项选择题

Too much ______ to X-rays can cause skin burns, cancer or other damage to the body.

A. disclosure
B. exhibition
C. contact
D. exposure
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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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