15．Scientists are trying to find the cure for the disease，because it is spreading more ____than expected（　�。�
A．steadilyB．rapidlyC．obviouslyD．strongly

分析 科學(xué)家正在盡力找到疾病的治療方法，因為疾病正在以比預(yù)想的更快的速度傳播．

解答 答案：B．根據(jù)spread"傳播"及句意可知，此處應(yīng)為rapidly急速的，快速地，故選B．A．steadily穩(wěn)定地；C．obviously明顯地；D．strongly強烈地．

點評 本題考查副詞辨析．學(xué)生應(yīng)根據(jù)副詞詞義和上下文選擇合適的副詞．

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