LASER / DEVICE / CONCENTRATE / LIGHT WAVES / INTENSE BEAM.A.LASER IS...

Question

Câu 23: Laser / device / concentrate / light waves / intense beam.A.Laser is a device which concentrates light waves into an intense light beam.B. The laser is a device which concentrates light waves and an intense light beam.C.Laser is a device concentrates light waves into an intense light beam.D.The laser is a device to concentrate light waves to an intense light beam.

Accepted Answer

1 C 2 A 3 B 4 C 5 A 6 C 7 C 8 A 9 A 10 B 11 B 12 D 13 A 14 B 15 D 16 D 17 A 18 D 19 D 20 C 21 A 22 D 23 A 24 B 25 D 26 C 27 B 28 D 29 A 30 B 31 C 32 B 33 D 34 D 35 C 36 D 37 B 38 B 39 C 40 C 41 C 42 C 43 A 44 D 45 A 46 B 47 B 48 A 49 B 50 B

LASER / DEVICE / CONCENTRATE / LIGHT WAVES / INTENSE BEAM.A.LASER IS...

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