A.the robotic system is designed to reduce labor |
B.cows can be raised by robots in the future |
C.robots direct cows into milking stations |
D.cows are kept clean by robots on some farms |
A.a(chǎn)djust the temperature of milking stations |
B.judge the quality of fresh milk |
C.improve the appetite of cows |
D.keep fresh milk for two weeks |
A.Because young people have no interest in it. |
B.Because it is difficult to learn how to use it. |
C.Because people can't afford to buy it. |
D.Because it usually causes the waste of milk. |
A.$150,000~$175,000. |
B.over $75,000. |
C.$150,000~$30,000. |
D.$30,000~$35,000. |
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A.He knows the importance of research. |
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A.to remind the students that this room was a laboratory |
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D.gave her students more homework |
A.It makes the students dislike their teachers. |
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