名著阅读。

       他双手抱头，陷入沉思之中。他的一生，从童年时代一直到现在，一幕幕地在他眼前闪过。他这二十四年生活得怎样？好呢，还是不好？他一年又一年地回顾，像一个铁面无私的法官检查着自己的一生。结果他十分满意，他这辈子过得还挺不错。当然，由于愚蠢，由于年轻，更多的是由于无知，也犯了不少错误。但最主要的一点是，在火热的斗争年代，他没有睡大觉，在夺取政权的残酷搏斗中找到了自己的岗位，而且在革命的红旗上，也有他的几滴鲜血。

       本片断中的“他”是____，他的一生充满了艰辛，但他矢志不渝，为革命奉献了自己的全部，即使在伤病无情地夺走他的健康时，他也以另一种方式——____，来实践他生命的誓言。

— ________ 

读漫画《以“诚”相“贷”》。 之所以要以“诚”相“贷”,是因为诚信(　　)

①影响着银行的资金安全

②决定信贷资产数量

③是经济活动健康发展的保证

④是有效防范金融风险的重要条件

Why Does Rain Smell So Good?

    Do you love the smell of rain? If so, you're not alone.

    ____(actual), some scientists believe that people got their love for the smell of rain from ____(ancestor), who relied on wet weather for their survival.

    But what makes rain smell so nice? There are several smells associated with rainfall that people find pleasing.

    One of these smells ____(call) “petrichor（尘土的味道）.” Petrichor, a term created in 1964 by two Australian scientists studying the smells of ____(rain) weather, comes from some chemical reactions.

    During dry periods some plants produce oils, and when it rains, these oils go into the air. Another reaction occurs when chemicals ____(produce) by some bacteria are sent out. All of these chemicals combine to create the pleasant particular smell when rain hits ____ ground.

    Another smell associated with rain is ozone（臭氧）. During a thunderstorm, lightning can split oxygen and another gad and ____(it) in turn can combine into a new substance. This substance reacts with other chemicals to form ozone, ____ has a sharp smell.

    When someone says he can smell rain coming, it may be that wind from an ____(approach) storm has carried ozone down from the clouds and ____ the man's nose.

如图所示，长为L=2m、质量为M=8kg的小车，放在水平地面上，小车向右运动的速度为6m/s时，在小车前端轻轻地放上一质量为m=2kg的小物块．小车与地面、物块与小车间的动摩擦因数均为μ=0.2，g取10m/s²，求