如图所示，某同学想通过实验研究力的作用效果与力的三要素的关系，他将一薄钢条的下端固定，分别用不同的力去推它，使其发生下列各图所示的形变，如果，F₁=F₃=F₄＞F₂，那么能说明力的作用效果跟力的方向有关的图是（　　）

二十四节气是中国历法的独特创造。依据下图判断，以下说法错误的是（    ）

 $2.\stackrel{.}{3}\stackrel{.}{4}\stackrel{.}{5}$的小数部分第100位上的数字是____．

    I'm Kate, and my sister____(be) Gina. I'm tidy, but Gina____(be not). In our room, my books and tapes____(be) in the bookcase. My ____(key) are in my schoolbag. I ____ (have) a clock. It's on the desk. ____(Gina) books are everywhere ----on____(she) bed, on the sofa and under the chair. The white model plane is____(she). It's under the desk. “Where are my keys? Where're my ____(ruler)? Where's my schoolbag?” Gina always ____(ask).