正确答案: C

called up

题目：All the firemen in the city were ______to fight against the big fire.

解析：解析：called in意为“回收”；called off意为“取消”；called up 意为“召集，打电话，使人想起”；called on意为“访问(某人)”。

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举一反三的答案和解析：

[单选题]

B． these C． ones D． some 正确答案：A解析：由于后面有一个定语从句，C选项前面要加定冠词才对；B和D选项不符合语法要求，只有A选项正确。

thoseB． these

解析：解析：由于后面有一个定语从句，C选项前面要加定冠词才对；B和D选项不符合语法要求，只有A选项正确。

[单选题]Wood carving refers to the art of creating or decorating objects of wood by carving with a sharp, hand-held tool. This form. of art has a history of over 1,000 years and a unique artistic style. The following is some introduction about wood carving in America.

arts and crafts

解析：解析：木雕属于一种艺术，也是一种手艺。其他选项的内容在本文中没有涉及，属于无关信息。

[单选题]Medicine Directions

six tablets a day

解析：解析：本题的依据句为“Do not exceed six tablets in twenty-four hours”，意思为“24小时之内(一天)不能超过6片药”，与C选项意思相符。其他选项在文章中没有出处。