First, multiple-choice questions: this big question has 8 small questions, with 5 points for each small question and * * 40 points. Of the four options given in each question, only one meets the requirements of the topic.

1~8:? BDCDB，BDC

Fill in the blanks (this big question is divided into two parts: mandatory question and multiple-choice question. 5 points for each question, out of 30)

(1) Required questions: Questions 9 to 13 are titled Required questions, and candidates must answer each question.

9.760.？ 10.4; 1 1.？ 3? ; ? 12. Root number 2/2? ; ? 13.(-9,5/3)? . 14.x^2+y^= 1(y<； & gt- 1) 15.？ 15.

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