One of the great revolutions of all time that occurred in 1948 was ______.
A.the invention of a transistor
B.the discovery of silicon
C.the production of a crystal called a diode working like a valve
D.the beginning of the start of microelectronics
第1题
One of the great revolutions of all time that occurred in 1948 was ______.
A.the invention of a transistor
B.the discovery of silicon
C.the production of a crystal called a diode working like a valve
D.the beginning of the start of microelectronics
第3题
A.what time be
B.what time is it
C.what is the time
D.what time it is
第6题
A.What time it is
B.What time is it
C.What day is it
D.What's the date
第9题
-My watch is not working. ________?
-It's ten past eleven.
A、What time is it
B、What's the time
C、What time is it by your watch
D、What is time by your watch
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