ID：9121-12263
_____, the problem remained unsolved.
A. Having not discussed B. Having not been discussed
C. Not having discussed D. Not having been discussed
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ID：9121-13118
The United Nations Conference on Global Environment, which took place earlier this year in Vienna, was a very ________ meeting.
A. productive B. communicative C. aggressive D. protective
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ID：9121-12953
The ________ of the scientific attitude is that the human mind can succeed in understanding the universe.
A) essence B) texture C) content D) threshold
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ID：9121-12952
Some people think that a ________ translation, or word-for-word translation, is easier than a free translation.
A) literal B) literary C) liberal D) linear
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ID：9121-12942
The directions were so ________ that it was impossible to complete the assignment.
A) ingenious B) ambitious C) notorious D) ambiguous
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