1.____ in cases where special oxidants are used, fires are the results of a fuel rapidly combining with the oxygen in the air. a. there are b. even though c. how d. except i think b is not wrong. but why not choose b?
2.before the formation of labor unions, individual workers has almost not voice in determining their wages, hours, or working conditions. which one is wrong? how to correct it? i think "before" just can be followed by clause not a phrase. is it right?
3.free nitrogen is chemically inert and combines with other elements only since very high temperatures or pressures. how to correct "since"?
4.to those who favorite free trade, the revival of barter can suggest nothing less than a disaster. which one is wrong? how to correct it? i think "nothing" should be substituted for "no". right?
5. in the united states, about 75 percent of the total tomatoes crop is processed into juice, canned tomatoes, sauces, pastes, and ketchup. which one is wrong? how to correct it?
6. today's nuclear fission fuels are the remnants of which used to be a much more active mixture of radioactive and fissionable materials two billion years ago and earlier. which one is wrong? how to correct it?
7. petrography concerns primarily with the detailed description and classification of rocks, whereas petrology deals primarily with rock formation. which one is wrong? how to correct it?
1:choose A. Lack of SV. WHen using B,you must add SV. 2:B is wrong. It should be "no voice"."before" is right, ie "before 1910, we had no world wars". 3:I think it is "under" too. 4:B looks quite strange. "favorite" is n or adj, cannot be a verb here. 5:Agree with upstair! 6:B. "much more" -->more 7: "formation"-->formations.Single noun should not be naked.(learned from new oriental school )
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发表于 2003-6-13 22:43:00
: "formation"-->formations.Single noun should not be naked.(learned from new oriental school 
)
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