题目

Holmes had taken out his watch, and as minute followed minute without result, an expression of the utmost annoyance and disappointment appeared upon his features. He bit his lip, drummed his fingers upon the table, and showed every other symptom of acute intolerance.So great was his emotion that I felt sincerely sorry for him, while the two detectives smiled derisively (嘲弄地), by no means displeased at this check which he had met.“It can't be a coincidence,” he cried, at last springing from his chair and pacing wildly up and down the room. “It is impossible that it should be a mere 如图，数轴上点A所表示的数的倒数是（ ）A．-2B．2C．D．