ACCORDING TO THE PASSAGE, HOW DO THE FIBERSCOPES USED TODAY DIFFER FROM THOSEUSED IN FIVE YEARS AGO

Câu 41 (TH):

According to the passage, how do the fiberscopes used today differ from those

used in five years ago?

A.

They use brighter light.

B.

They are longer.

C.

They contain more fibers.

D.

They are larger in diameter.