A.They lost balance in excitement. | B.They showed strong disbelief. |
C.They expressed little interest. | D.They burst into cheers. |
A.Assessment — Prototype — Design — Construction. |
B.Assessment — Design — Prototype — Construction. |
C.Design — Assessment — Prototype — Construction. |
D.Design — Prototype — Assessment — Construction. |
A.The large size. | B.Limited facilities. |
C.The desert climate. | D.Poor natural resources. |
A.They are questionable. | B.They are out of date. |
C.They are advanced. | D.They are practical. |
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A.making some sounds | B.waving their leaves |
C.producing some chemicals | D.sending out electronic signals |
A.They presented it with all common crops. |
B.They fixed 13 sensors inside the device. |
C.They collected different damaged leaves. |
D.They made tests on damaged and healthy leaves. |
A.pick out ripe fruits |
B.spot the insects quickly |
C.distinguish different damages to the leaves |
D.recognize unhealthy tomato leaves |
A.is unable to tell the smell of flowers |
B.is not yet used in greenhouses |
C.is designed by scientists at Purdue |
D.is helpful in killing harmful insects |
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A.A lot of stolen credit-cards were sold on the Internet.? |
B.Fraud on the Internet.? |
C.Many Web sites are destroyed.? |
D.Many illegal Web sites are on the Internet. |
A.cheating | B.sale | C.payment | D.safety |
A.Four. | B.Three. | C.Five. | D.Six. |
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