题目内容

Russia is ______ the largest country in the world, covering more than a ninth of the Earth"s land area.

A. far from
B. by far
C. at first
D. other than

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患者女性，18岁，转移性右下腹痛1天，伴恶心、呕吐。急诊入院，查体：体温38．5℃，血液检查：中性粒细胞18×109／L，右下腹压痛、反跳痛明显。患者的疾病诊断最可能是

A. 宫外孕
B. Meckel憩室炎
C. 急性阑尾炎
D. 肠系膜淋巴结炎

Moderate and regular exercise can boost the rate of blood circulation and metabolism.

A. restrict
B. reduce
C. increase
D. stabilize

丁型肝炎病毒主要感染

A. HAV携带者
B. HBV携带者
C. HEV携带者
D. HCV携带者

Even if you possess these qualities, you will not achieve your goal without uncompromising effort.

A. unyielding
B. uninhabitable
C. unproductive
D. unsubstantial