题目内容
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[单选题]
In 1947 three scientists, John Bardeen, William Shockley, and Walter Brattain working
A.Baidu
B.Microsoft
C.AT&T's Bell Labs
D.Yahoo
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A.Baidu
B.Microsoft
C.AT&T's Bell Labs
D.Yahoo
A.Baidu
B.Microsoft
C.AT&T's Bell Labs
D.Yahoo
The author imply that ______.
A.The US's Monsanto agreed with the results of Chinese scientists study
B.GM cotton is an ideal crop
C.The US's Monsanto dismissed the research for its own profit
D.Cotton bollworm has no resistance to Bt cotton over time
世界上第一台电子计算机诞生于( )。
A)1944 B)1945
C)1946 D)1947