下列说法正确的是（　　）

解释下列划线的字词。

不图为乐之至于斯也                              ____

此之谓失其本心                                  ____

或泄于口                                        ____

一食或尽粟一石                                  ____

富而可求也                                      ____

夫精念存想                                      ____

俱用精神                                        ____

妄见之也                                        ____

$\frac{2}{7}$ ____ $\frac{7}{9}$     $\frac{1}{10}$ ____ $\frac{1}{20}$

2800千克____3吨    2000kg ____2 t

3分____180秒     6时____60分

2时____210分     4时____225分

I have two long          and I have two big________.