题目内容
5．The smart sweeping robot can clean the floor byitself．（it）分析 智能扫地机器人可以自行清扫地板．
解答 答案：itself．
根据The smart sweeping robot can clean the floor by--．（it）可知智能扫地机器人可以自行清扫地板．这里by oneself表示独自，单独，后面跟反身代词，这里robot是物，单数形式，所以用itself．故填itself．
点评 单词填空类型题要充分理解句意，再根据单词提示完成试题，注意时态，单复数，词性等变化．
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Open daily 7：30 a．m．-9：00 p．m．
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Sunday-Thursday，9：00 a．m．-8：00 p．m．/Last entry at 6：00 p．m．
Friday and Saturday，9：00 a．m．-9：00 p．m．/Last entry at 7：00 p．m．
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*Children 6 and under are free．
*Join a guide on a Memorial tour．Explore the historical importance of the World Trade Center．You can buy the Memorial tour ticket separately．The price is 15per person．
*Join a guide on a Museum tour，examining authentic artifacts （真品） to understand what happened on 9/11，and the history and rebuilding of the World Trade Center．The price is $20per person but you need to get the Museum admission （入场券） first．
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A.39 B.40 C.69 D.79
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1and February 26，1993．The 9/11 Memorial is also a place to honor those who risked their lives to save others．The 9/11 Museum is well-known for preserving the history of the events of September 11．They are
located at the World Trade Center．We strongly recommend the use of public transport there．There are eight undergrounds to get you there．
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Open daily 7：30 a．m．-9：00 p．m．
Museum Hours of Operation
Sunday-Thursday，9：00 a．m．-8：00 p．m．/Last entry at 6：00 p．m．
Friday and Saturday，9：00 a．m．-9：00 p．m．/Last entry at 7：00 p．m．
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| Museum Admission | Museum Admission & Museum Tour | Museum Admission & Memorial Tour | |
| Adult （ages 18-64） | 24 | 44 | 39 |
| Senior （ages 65+） | 18 | 38 | 33 |
| US College Students | 18 | 38 | 33 |
| Youth （ages7-17） | 15 | 35 | 30 |
*Join a guide on a Memorial tour．Explore the historical importance of the World Trade Center．You can buy the Memorial tour ticket separately．The price is 15per person．
*Join a guide on a Museum tour，examining authentic artifacts （真品） to understand what happened on 9/11，and the history and rebuilding of the World Trade Center．The price is $20per person but you need to get the Museum admission （入场券） first．
For a full list of options，visit 911 memorial．org/tours．
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C．You are advised to take underground there．
D．Join a Memorial tour to understand what happened on 9/11．
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A.39 B.40 C.69 D.79
33．The passage probably comes fromD．
A．a film magazine
B．a history textbook
C．a government report
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