别字包括()3类。
A.同音别字
B.形近别字
C.音近别字
D.义近别字
参考答案:A, B, D
Much of the farm is under water; ___________ the grain, most of that has been ruined.
A.owing to
B.thanks to
C.as for
D.as with
当前用于通信的光纤其直径一般都为125μs。