题目内容

Although we complain when our plane isn't ____(按期) or when we have to wait in a traffic jam, we also complain about always being in a hurry.

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We are always ____(在移动中), and we don't have much patience with slow systems of transportation.

Every ____(偶尔), we hear the sound of a train whistle clear and high in the night air and we feel sad.

By the time the train has ____(停下) Montreal, the traveling “detectives” will have figured it out and caught the “criminal.”

关于霍乱弧菌的生物学性状,错误的描述是

A. 增菌培养基通常为碱性蛋白胨水
B. 悬滴观察呈“流星”样运动
C. 革兰染色为阳性
D. 有单鞭毛

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