Theboyclimbedintothethirdstoreyofthebuilding,fromhecouldlookfartherintothedistance.()A.whichB.itC.thereD.where
The boy climbed into the third storey of the building,from _____ he could look farther into the distance.( )
A. which
B. it
C. there
D. where
从句意看,先行词是the third storey of the building,from______he could look farther into the distance是定语从句.一般情况下,是由介词加关系代词(whom/which)引导,但是本句的句意是从那里看,所以应选D.from where是特殊用法,相当于是and from there 或 from the place where.
函数分解一个函数x=f(t),在原点附近是连续可导的在原点附近可分解为x=t*df/dt+R(t) 2020-05-14 …
matlab 求解二元非线性方程组本人初次接触MATLAB,望大虾赐教!r=r0*((tsa-t) 2020-05-16 …
1)有三个关系R,S和T如下 R(AB m1 n2) S(BC 13 35) T(ABC m13) 2020-05-17 …
设关系R和关系S具有相同的属性个数,且相应的属性取自同一个域,则{t | t ∈ R ∧ t ∈ S 2020-05-23 …
设关系R与S具有相同的目,且对应的属性的取值来自同一个域,则{t|t∈R∧t∈S), t是元组的变 2020-05-23 …
设关系R与S具有相同的目,且对应的属性的取值来自同一个域,则{t\t∈R∧t∈ S},t是元组的变量 2020-05-23 …
设关系R和关系S具有相同的属性个数,且相应的属性取自同一个域,则{t|t∈R∧┒t∈S}t是元组变量 2020-05-24 …
讨论:关于如何求卷积x(t)*h(-t)的积分表达式?以前信号与系统里学过了x(t)*h(t)的表 2020-06-06 …
r(t)=x(t)i+y(t)j+z(t)kijk分别为坐标xyz的正方向的单位矢量,位矢r在直角 2020-06-14 …
已知质点运动方程为r(t)=x(t)i+y(t)j其中x(t)=(m/s)t+2m,y(t)=(1/ 2020-11-01 …