[填空题]person living near to each other

[填空题]person living near to each other

[单项选择]Two competitors battle each other in each match of a tournament with nine participants. What is the minimum number of matches that must occur for every competitor to battle every other competitor
A. 27
B. 36
C. 45
D. 64
E. 81

[单项选择]

Everything living on earth—each plant and animal—needs other living things. Nothing lives alone. Most animals must live in a group, and even a tree or a plant grows close together with others of the same kind. Sometimes one living thing hunts another, one eats and the other is eaten. Each kind of life eats another kind of life in order to live, and together they form a food chain. Some food chains are simple, others are complicated. But all have two things in common-all food chains begin with the sun, and all food chains become broken up if one of the links disappears.
All life depends on energy from sunlight. Only plants can use this energy directly. Their leaves are little factories that use sunlight to make food from water and things in the soil and air.
Plants in turn feed all other living things. Animals can only use the sun’s energy after it has been changed into food by plants. Some animals feed directly on plants, others eat smaller anima
A. Each plant can live alone.
B. Each animal can live alone.
C. Everything living on earth can not live without needing other living things.
D. If living things want to live they must kill each other.

[单项选择]When will they meet each other

[单项选择]Who are talking to each other

[单项选择]Passage TwoA. Other living things change their environment while man doesn’ t.
B. Man alters his environment while he is adapted to it, but other living things do not.
C. Other living things is not only adapted to their environment but also alters it.
D. Man is only adapted to the environment but he doesn’ t alter it.

[单项选择]Where will tile speakers meet each other
A. At the snack bar.
B. In front of the library.
C. At the International Center.
D. In front of the campus mailbox.

[单项选择]Each person on a committee with 40 members voted for exactly one of 3 candidates, F, G, or H. Did Candidate F receive the most votes from the 40 votes cast ？（）
(1)Candidate F received 11 of the votes
(2)Candidate H received 14 of the votes.
A. 条件(1)充分，但条件(2)不充分．
B. 条件(2)充分，但条件(1)不充分．
C. 条件(1)和(2)单独都不充分，但条件(1)和条件(2)联合起来充分．
D. 条件(1)充分，条件(2)也充分．
E. 条件(1)和条件(2)单独都不充分，条件(1)和条件(2)联合起来也不充分．