With the development of science and technology , more new technology____ to the fields of IT.  
A．has been introducingB．is being introduced
C．is introducedD．was introduced
B
這題考查時(shí)態(tài)語態(tài)，句意是：隨著科技的發(fā)展，更多新科技正在被引進(jìn)到IT領(lǐng)域。選B。
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