(单选题) They found _____the latest information in their own field when the Internet discontinued.(本题3.5分) A、 difficult to obtain B、 it difficult to obtain C、 that difficult obtaining D、 it difficult to be obtained

(单选题) They found _____the latest information in their own field when the Internet discontinued.(本题3.5分)
A、 difficult to obtain
B、 it difficult to obtain
C、 that difficult obtaining
D、 it difficult to be obtained

出自：辽宁师范大学-英语口语(二)

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