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Questions 7 to 10 are based on the following conversation. At the end of the conversation, you will be given 20 seconds to answer the questions. Now listen to the conversation. What are speakers mainly discussing

A. The effect of the atmosphere on rainfall.
B. How conditions on Earth support life.
C. How water originated on Earth.
D. A new estimate of the age of Earth.

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女，25岁，2周来发热，四肢关节酸痛，无皮疹，胸透示两侧少量胸腔积液，体检：体温 39℃，心率120次/分，两下肺叩诊浊音，呼吸音降低，肝脾未触及，两手掌指关节及膝关节轻度肿胀，血红蛋白100g/L，白细胞3×109/L，血小板50×109/L，尿常规蛋白1g/L。根据以上病史还需作进一步检查，下列检查中，你认为对诊断最为关键的是

A. 类风湿因子
B. 抗核抗体谱检查
C. 血免疫球蛋白+补体
D. C反应蛋白

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已知汉字“大”的区位码是2083，在PC机中其内码的十六进制表示是______。

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Questions 7 to 10 are based on the following conversation. At the end of the conversation, you will be given 20 seconds to answer the questions. Now listen to the conversation. What did recent photographs from a space satellite indicate

A. The surface of the ocean is expanding.
B. Volcanic activity is increasing.
C. The surface of Earth contains tons of cosmic dust.
D. Thousands of comets are colliding with Earth’s atmosphere.

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男性，32岁，饱食后突感右上腹部剧痛，迅速转移到右下腹和下腹部，伴恶心，呕吐不能减轻腹痛。发病6小时来院急诊，体检：痛苦貌，血压90/60mmHg，脉搏120次/分，全腹肌紧张、压痛、反跳痛，以上腹和右上腹部为显著，肠鸣音消失，肝浊音界存在，白细胞16×109/L，中性粒细胞0.9。最可能的诊断是

A. 肠扭转
B. 十二指肠溃疡急性穿孔
C. 急性胆囊炎伴穿孔
D. 急性胰腺炎

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Questions 7 to 10 are based on the following conversation. At the end of the conversation, you will be given 20 seconds to answer the questions. Now listen to the conversation. What are speakers mainly discussing

A. The effect of the atmosphere on rainfall. B. How conditions on Earth support life. C. How water originated on Earth. D. A new estimate of the age of Earth.

已知汉字“大”的区位码是2083，在PC机中其内码的十六进制表示是______。

Questions 7 to 10 are based on the following conversation. At the end of the conversation, you will be given 20 seconds to answer the questions. Now listen to the conversation. What did recent photographs from a space satellite indicate

A. The effect of the atmosphere on rainfall.
B. How conditions on Earth support life.
C. How water originated on Earth.
D. A new estimate of the age of Earth.