问题
选择题
The woman sold the eggs ________ seven dollars and they were sold ________ half price.
A.with, at
B.for, at
C.at, in
D.by, on
答案
B
因为以多少钱买卖用for;但与price连用,表示以某种价格买卖时,用at
The woman sold the eggs ________ seven dollars and they were sold ________ half price.
A.with, at
B.for, at
C.at, in
D.by, on
B
因为以多少钱买卖用for;但与price连用,表示以某种价格买卖时,用at
小明想知道弹簧测力计的测力原理,于是他在实验室中做了实验,数据如下表所示,请你帮他分析数据并总结出结论.
弹簧原长:10cm
拉力(N) | 0 | 2 | 4 | 6 |
长度(cm) | 10 | 11 | 12 | 13 |
伸长(cm) | 0 | 1 | 2 | 3 |