sym75228
幼苗
共回答了12个问题采纳率:100% 举报
We may define chemistry as the science
in (the science) we deal with the chemical change in matter
as a result of (chemical change in matter )it is possible to form a new substance
第一个which修饰the science(=chemistry),定语从句,没什么好说的;
第二个which指代chemical change in matter,后面的It作形式主语.
我们可以把化学看作这样一门科学,它让物质间产生化学改变,而这一改变的结果,很可能形成新的物质.
1年前
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