2. He found it increasingly difficult to read, his eyesight was beginning to fail.
A. and
B. for
C. but
D. or
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3. A man cannot smile like a child , a child smiles with his eyes, while a man smiles with his lips alone.
A. so
B. but
C. and
D. for
4. there are too many people there, we have to find another house.
A. Because; so
B. Though; but
C. Since; /
D. /; if
5. it is snowing, we shall not go out.
A. Before
B. After
C. Until
D. As
以下各项中,没有体现出博弈论思想的是( )。
A. 田忌赛马
B. 掩耳盗铃
C. 鹬蚌相争
D. 螳螂捕蝉