[单项选择]What can be inferred from the passage
A. When traveling in space, spacecraft take indirect route to avoid gravity from other planets.
B. Space engineers are now developing space elevators.
C. It will take the current spacecraft several hundred years to travel to other solar systems.
D. Scientists from different countries are working together to develop new space technologies.

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[单项选择]What can be inferred from this passage
A. Nowadays science is learning more and more about the impact humidity has on all of us by using sophisticated measuring devices.
B. Humidity could interfere with television signals.
C. Humidity may warp priceless antiques.
D. Visual disturbances may decrease in days of low humidity.

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[单项选择]What can be inferred from the passage
A. Drivers on motorway drive within the speed limit.
B. Drivers on motorway are protected by the police.
C. Most drivers on motorway drive at a crazy speed.
D. Most drivers on motorway are often stopped by the police.

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