| 1. 单选题 | 详细信息 |
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Many airlines now allow passengers to print their boarding passes online ______ their valuable time.
A . save
B . saving
C . to save
D . saved
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| 2. 单选题 | 详细信息 |
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If you don't understand something, you may research, study, and talk to other people _______ you figure it out.
A . because
B . though
C . until
D . since
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| 3. 单选题 | 详细信息 |
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The national park has a large collection of wildlife, _________ from butterflies to elephants.
A . ranging
B . range
C . to range
D . ranged
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| 4. 单选题 | 详细信息 |
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At first Robert wouldn't let his daughter go diving, but eventually he___________ as she was so confidence about her skills.
A . gave in
B . dressed up
C . broke in
D . turned up
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| 5. 单选题 | 详细信息 |
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The__________ that there is life on other planets in the universe has always inspired scientists to explore the outer space.
A . advice
B . order
C . possibility
D . invitation
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| 6. 单选题 | 详细信息 |
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_________ along the old Silk Road is an interesting and rewarding experience.
A . Travel
B . Traveling
C . Having traveled
D . Traveled
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| 7. 单选题 | 详细信息 |
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Susan had quit her well-paid job and _________ as a volunteer in the neighborhood when I visited her last year.
A . is working
B . was working
C . has worked
D . had worked
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| 8. 单选题 | 详细信息 |
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A rescue worker risked his life saving two tourists who _________ in the mountains for two days.
A . are trapping
B . have been trapped
C . were trapping
D . had been trapped
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| 9. 单选题 | 详细信息 |
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Kids shouldn't have access to violent films because they might _______ the things they see.
A . indicate
B . investigate
C . imitate
D . innovate
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| 10. 单选题 | 详细信息 |
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Developing the Yangtze River Economic Belt is a systematic project which _______ a clear road map and timetable.
A . calls for
B . calls on
C . calls off
D . calls up
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