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1999.8语法
1999.8 13.13. ______ in cases where special oxidants are used, fires are the result of a fuel rapidly combining with the oxygen in the air. (A) There are (B) Even though (C) How (D) Except
为什么选D,IN CASES在这里有什么作用,作何解释?
30. The decade of the 1920's was significant in Georgia's history because of the
A B
rapidity with what agriculture declined in the state.
C D
Key:C
这个30题和下面的题我总是不明白,为什么这个属于定从。
39. Today's nuclear fission fuels are the remnants of which used to be a
A much more active mixture of radioactive and fissionable materials two billion
B years ago and earlier.
C D
KEY: A
为什么这个就是宾从.
糊涂死了,谢谢了.
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