题目内容

m和z一定时，分度圆是一个大小唯一确定的圆。

A. 对
B. 错

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Sputnik, the first satellite in space, weighed less than a refrigerator

A. less than 85 kilograms(190 pounds)
B. less than 170 kilograms(370 pounds)

The number of people in space right now can be counted on one hand

A. 5 or less
B. more than 5

The Hubble Telescope is about as long as a school bus

A. 13 meters(40 feet)
B. about 25 meters (80 feet)

Astronauts can now fly to the International Space Station in the time it takes to watch three movies

A. around two hours
B. round six hours