并线表与分线表的根本区别在于（）。
A.内部结构
B.计量原理
C.端钮接线盒
D.检定方式
参考答案：C
-- Does she devote much of her spare time_______ ?
--I think so, because she wants to be a famous writer.[ ]
A. reading
B. to read
C. to reading
D. for reading
简述原始地层压力异常的原因？
oes she devote much of her spare time_______ ?