题目内容
If nothing is done to protect the environment, millions of spiders that are alive today will have become ________.
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The ________ of the scientific attitude is that the human mind can succeed in understanding the universe.
The old lady has developed a ________ cough which cannot be cured completely in a short time.
What the correspondent sent us is an ________ news report. We can depend on it.
Having had her as a professor and adviser, I can tell you that she is an ________ force who pushes her students to excel far beyond their own expectations.
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