According to tile passage, language learners can reduce the number of their mistakes by （）
A. asking native speakers for explanations
B. reading good books in the foreign language
C. comparing their speech with that of native speakers
D. paying no attention to them while speaking
呕吐的基本病机为
A. 大肠传导失常
B. 胃失和降，胃气上逆
C. 肝气犯胃，胃气上逆
D. 中焦气机不利，脾胃升降失职
E. 胃气阻滞，胃失和降，不通则痛
George asked the question because he wanted to show that he was （）
A. interesting
B. not nervous
C. different
D. eager to learn
Mrs. Robson had lived in the house（）
A. since she had sold her flat
B. for less than a decade
C. since she had been born
D. for more than ten years
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