【单选题】He_____ articles for our wall-newspaper these years, and he____ about thirty articles.
B.
has been writing; wrote
C.
is writing; has been writing
D.
has been writing; has written
【单选题】能准确地反映中药泥土砂石等杂质的掺杂含量的检查项目是:
【单选题】能准确地反映中药泥土砂石等杂质的掺杂含量的检查项目是( )
【单选题】He is _____ tearing up what he has written and beginning over again.
【单选题】能准确地反映中药 泥土砂石等杂质的掺杂含量的检查项目是
【单选题】He has written some very good poems, but he is ________ known for his short stories
【简答题】A.Because he is interested in the subject. B.Because he has already written a paper on it. C.Because he doesn't know anything about it. D.Because it is very abstract.
【简答题】A.Because he is interested in the subject. B.Because he has already written a paper on it. C.Because he doesn't know anything about it. D.Because it is very abstract.
【单选题】After he has written his paper, he found some additional material______he should have included.
【单选题】能准确地反映中药泥土砂石等杂质的掺杂含量的检查项目是