This is a______ but extremely difficult technology in the future.A．satisfactoryB
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This is a______ but extremely difficult technology in the future.| A．satisfactory | B．costly | C．promising | D．far-fetched |
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答案
| C |
解析
| 考查语境下的词义辨析。promising意为“有希望的”。将来的话，还没有使用，排除A；B,D与后面的extremely dofficult不能构成转折。 |
举一反三
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