Choose the correct sentence which is built from the words and phrases given:
Laser/ device/ concentrate/ light waves/ intense/ beam.
A.
Laser is a devise concentrates light waves into an intense light beam.
B.
The laser is a devise to concentrates light waves to an intense light beam.
C.
The laser is a devise which concentrates light waves into an intense light beam.
D.
Laser is a devise which concentrates light waves and an intense light beam.
Đáp án và lời giải
Đáp án:C
Lời giải:
The laser is a devise which concentrates light waves into an intense light beam.