【单选题】
{{B}}Decide which of the choices given below would best complete the passage if inserted in the corresponding blanks. Mark the best choice for each blank on yourANSWER SHEET.{{/B}}
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More and more residences, businesses, and even government agencies are using telephone answering machines to take messages or give in formation or instructions. Sometimes these machines give{{U}} (31) {{/U}}instructions, or play messages that are difficult to understanD、If you{{U}} (32) {{/U}}telephone calls, you need to be ready to respond when you get a{{U}} (33) {{/U}}The most common machine is the{{U}} (34) {{/U}}used in residence. If you call a home{{U}} (35) {{/U}}there is a telephone answering machine{{U}} (36) {{/U}}you will hear several rings and then a recorded message that{{U}} (37) {{/U}}says something like this: "Hello. We can’t come to the{{U}} (38) {{/U}}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,"{{U}} (39) {{/U}}is a brief, high-pitched{{U}} (40) {{/U}}.After the beep, you can say who you are, whom you want to speak to, and what number the person should call to{{U}} (41) {{/U}}you, or you can leave a{{U}} (42) {{/U}}. Some telephone answering machines record for only 20 or 30 seconds after the beep,{{U}} (43) {{/U}}you must respond quickly. Some large businesses and government agencies are using telephone answering machines to provide information on{{U}} (44) {{/U}}about which they receive a large volume of{{U}} (45) {{/U}}Generally speaking, using these systems{{U}} (46) {{/U}}you to have a touch-tone phone. The voice on the machine will tell you to{{U}} (47) {{/U}}a certain button on your telephone if you want information on TopicA, another button for TopicBand and so on. You listen{{U}} (48) {{/U}}you hear the topic you want to learn about, and then you push the{{U}} (49) {{/U}}button. Immediately after making your{{U}} (50) {{/U}}, you will hear a recorded message on the topiC、
A．commands
B．requires
C．asks
D．requests
网考网参考答案：B
网考网解析：动词辨析题。require意为“要求，需要”，可表示某项规章制度或条例的要求，故[B]为答案。command意为“命令，统帅”，不符合句意。ask，request这两个词都能表示“要求”，但ask及request的主语通常是人，只有require的主语可以是物。
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