单项选择题


What is the advantage of silicon over carbon

A. Silicon is much more uncommon than carbon.
B. Carbon is much more common than silicon.
C. Silicon is much more common.
<上一题 目录 下一题>
热门 试题

单项选择题
What problem did city merchants face
A. The lack of a qualified sales force. B. A decline in the number of customers. C. Difficulty in transporting merchandise.
单项选择题
A．examinedB．completedC．markedD．answered
A．examined
B．completed
C．marked
D．answered
相关试题