It was Dr. Rontgen who （） X-rays.
A: discovered
B: invented
C: made u
A: discovered
B: invented
C: made u
举一反三
- It was Dr. Rontgen who （） X-rays. A: Adiscovered B: Binvented C: Cmade up
- ItwasDr.Rontgenwho（）X-rays. A: discovered B: invented C: madeup
- X-rays are also called Rontgen rays _____ the discoverer who first put them to use. A: in case of B: in view of C: in place of D: in honor of
- —[u] [/u] was the car invented? —It was invented in 1983. A: When B: Why C: How D: Who
- James Watt （）the steam engine in 1796. A: discovered B: had discovered C: invented D: had invented