A.Felton, California | B.the scientists |
C.how to work with computers | D.sending prints by pigeon |
A.don’t like carrying things |
B.a(chǎn)re often cheap to keep |
C.seem out of place in the space age |
D.a(chǎn)ren’t friendly to the scientists |
A.usually costs more |
B.is something that works |
C.is often unhappy |
D.is often don by animals |
A.Pigeons were used as messengers. |
B.Human messengers were used. |
C.What the scientists input was sent to the computer. |
D.Scientists got their designs. |
A.do the work at low cost |
B.get their pictures on television |
C.understand the computer |
D.make the scientists pleased |
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