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【简答题】
一个是一个预先定义的__________,它包括一个或多个速度,影响着从起点到终点的移动。
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皮皮学刷刷变学霸
举一反三
【单选题】Listen to Track 67.
A.
It is not obvious how whales find their way.
B.
Different whales have different ways of locating food.
C.
Whales have a poor sense of orientation.
D.
Scientists have not been able to track the whales.
【单选题】Grey whales have long been _______in the north Atlantic and hunting was an important causes for that.
A.
deprived
B.
extinct
C.
detained
D.
extinguished
【单选题】Grey whales have long been ________ in the north Atlantic and hunting was an important cause for that.
A.
extincted
B.
extinguished
C.
detained
D.
deprived
【单选题】Grey whales have long been_____ in the north Atlantic and hunting was an important cause for that.
A.
deprived
B.
detained
C.
extinct
D.
extinguished
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