高等继续教育 / 综合英语（二）
17、
B. He had to make good use of his mind because of thirst
C. He was so thirty that he tried to make full use of his mind.
D. He was so thirty that he could not manage to think of anything.
17、
His mind had already cracked with thirst .
A. He had already lost control of himself because of thirst.B. He had to make good use of his mind because of thirst
C. He was so thirty that he tried to make full use of his mind.
D. He was so thirty that he could not manage to think of anything.
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