More and more residences, businesses, and even government agencies are using telephone answering machines to take messages or gi

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问题     More and more residences, businesses, and even government agencies are using telephone answering machines to take messages or give information or instructions. Sometimes these machines give (1)_____ instructions, or play messages that are difficult to understand. If you (2)_____ telephone calls, you need to be ready to respond when you get a (3)_____
    The most common machine is the (4)_____ used in residence. If you call a home (5)_____ there is a telephone answering machine (6)_____ you will hear several rings and then a recorded message that (7)_____ says something like this: "Hello. We can’t come to the (8)_____ right now. If you want us to call you back, please leave your name and number after the beep." Then you will hear a "beep", (9)_____ is a brief, high-pitched (10)_____. After the beep, you can say who you are, whom you want to speak to, and what number the person should call to (11)_____ you, or you can leave a (12)_____. Some telephone answering machines record for only 20 or 30 seconds after the beep, (13)_____ you must respond quickly.
    Some large businesses and government agencies are using telephone answering machines to provide information on (14)_____ about which they receive a large volume of (15)_____. Generally speaking, using these systems (16)_____ you to have a touch-tone phone (a phone with buttons rather than a rotary dial). The voice on the machine will tell you to (17)_____ a certain button on your telephone if you want information on Topic A, another button for Topic B, and so on. You listen (18)_____ you hear the topic you want to learn about, and then you push the (19)_____ button. Immediately after making your (20)_____, you will hear a recorded message on the topic.


选项 A、which
B、where
C、that
D、when

答案B

解析 结构衔接题。该题位于条件状语从句If…中,分析该句子可以看出从句中主谓宾齐全,因此there is a telephone answering只能以从句的形式出现在该条件状语从句中。条件状语从句中的宾语是a home,很容易看出这里there is…应该是定语从句,修饰先行词home。根据语法规则可知,这里需要一个作状语的引导词,表示有录音电话的地点,因此正确选项是where。which引导定语从句时,在句中作主语或宾语,如:The river,which flows through London,is called the Thames. (这条流经伦敦的河叫泰晤士河)。该句中,where也可以用in which代替,起副词作用。that与 which类似,在定语从句中作主语或宾语,如:This is the best article that has been written on the subject.(这是有关这一主题的文章中最好的一篇)。when是关系副词,引导表示时间的定语从句。
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