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【单选题】
若已知物质有两种或两种以上晶体,这种现象叫做 ( )A.
同晶现象
B.
多晶现象
C.
同构现象
D.
异构现象
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【单选题】The traditional image of cave dwellers is probably ape-like creatures clad in skimpy animal skins, complete with clubs and matted hair and chewing unidentifiable bones. But in the region around Saumur...
A.
Traces of prehistoric cave dwellers.
B.
Caves inhabited since prehistoric times.
C.
People who dress in animal skins.
D.
People who choose to live in caves.
【简答题】根据所给首字母或中文提示写出适当的词。(共10小题；每小题1分，满分10分) 76. In my o____________, it was foolish of him to commit suicide. 77. Did the medicine have any e________ on his disease? 78. It is our ______________ (传统的) cust...
【简答题】Last July, my 12-year-old car died on California's Santa Freeway. It was an hour before sunset, and I was 25 miles from home. I couldn't reach anyone to pick me up, so I decided to take a bus. Not kno...
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