A.cold | B.loud | C.cruel | D.ugly |
A.swam great distances to Antarctic | B.has always lived in the region |
C.gradually evolved from shrimps | D.has nothing in common with shrimps |
A.it marks NASA’S first Antarctic biological study |
B.it proves there is marine life in the Antarctic |
C.it could inspire further study of life in harsh environments |
D.it shows that Lyssianasid amphipod is closely related to shrimps |
A.Complex life usually lives on other forms of life. |
B.Scientists saw two creatures in the two – minute video. |
C.It is possible for creatures to live 180 meters below the ice though there is no light. |
D.Scientists captured the shrimp – like creature in a camera by drilling a hole through the ice. |
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| light moths | darker moths |
Moths set free | 201 | 601 |
Moths recaught | 34 ( 16%) | 206 ( 34%) |
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A.fertilizer | B.gas | C.electricity | D.methane |
A.Increase | B.Reduction | C.Flow | D.Pollution |
A.San Francisco is short of electricity |
B.San Francisco has done a lot of in rubbish recycling. |
C.Fewer people will keep dogs as pets in San Francisco |
D.There will be no rubbish by 2010 in San Francisco |
A.San Francisco ‘s new policy for pet keepers |
B.San Francisco ‘s new plan for recycling |
C.how to keep a city clean |
D.how to deal with rubbish |
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