在相对地而静止的坐标系内，A、B二船均以2m/s的速率匀速行驶，A船沿x轴正向，B船沿y轴正向。今在A船上设置与静上班坐标系方向相同的坐标系（x、y方向单位矢用i、j表示），那么在A船上的坐标系中，B船的速度（以ms为单位）为（ ）。《》（ ）
I marvel that he _____, it having been said he had taken his final departure for Portugal.
The doctor suggested that he _____ an operation at once.
The crowd cheered _____ as she took the smoke-blackened bundle out of my arms—I had saved her baby!
Over five times more studies on life satisfaction have been published since 1979 than at any time_____
No particular stage of life is less happy than another, not the tumultuous teenage years or the mid-life period, not _____ the waning decades of old age.
The adoption of the new policy would relieve the factories_____a tremendous burden.
In the nineteenth century，Samuel Gridley Howe founded the Perkins School for the Blind，( )for children in Boston，Massachusetts.
My grandparents always enjoy the( )of their relatives.
The UN put the( )forward so as to better cope with the tense situation in the Middle East.
This country is( )deflationary pressure and the country′s policy-makers should create a better policy mix to cope with the new economic environment.
