The little girl doesn’t like to go to school, and she is always ______ for school.
A. late
B. later
C. latter
D. lately
THE ROLE OF GOVERNMENT IN THE ECONOMY 1 Because most people do not volunteer to pay taxes or police their own financial affairs, governments cannot influence economic activity simply by asking people to pollute less, to give money to the poor, or to be innovative. To accomplish these things, governments have to pass laws. Since the early twentieth century, governments of countries with advanced industrial or service economies have been playing an increasing role in economics. This can be seen in the growth of government taxation and spending, in the growing share of national income devoted to income-support payments, and by the enormous increase in the control of economic activity. 2 The large-scale organization of business, as seen in mass production and distribution, has led to the formation of large-scale organizations--corporations, labor unions, and government structures--that have grown in importance in the past several decades. Their presence and growing dominance have shifted capitalist economies away from traditional market forces and toward government administration of markets. 3 In the United States, government provides a framework of laws for the conduct of economic activity that attempt to make it serve the public interest. For instance, the individual states and the federal government have passed laws to shield investors against fraud. These laws specify what information has to be disclosed to prospective investors when shares of stocks or bonds are offered for sale. Another important area of law concerns the labor force, such as regulation of work hours, minimum wages, health and safety conditions, child labor, and the rights of workers to form unions, to strike, to demonstrate peacefully, and to bargain collectively through representatives of their own choosing. 4 In other nations, the ways in which governments intervene in their economies have varied; however, governments everywhere deal with essentially the same issues and participate in economic activity. Even governments that are reluctant to regulate commerce directly have undertaken large-scale projects such as hydroelectric and nuclear energy developments, transportation networks, or expansion of health, education, and other public services. According to the passage, all of the following are examples of government participation in economic activity EXCEPT
A. taxation and spending
B. small business ownership
C. ncome-support payments
D. transportation networks
阅读以下文字,完成以下问题。 所谓太阳能发电卫星是指搭载太阳电池壁板的卫星。它在轨道上保持与地球同步时,所产生的电力变换成微波束送回地面使用。日本科学家设想的太阳能发电卫星大致上由两个系统组成。一是在宇宙空间进行发电的卫星,二是在地面上接收从卫星发回来电波的受电设施。 发电卫星的形状为每边336米的正三角柱,柱长303米。三角柱的两个侧面布满着非品态硅太阳电池,发电功率为每平方米1.4千瓦。剩下的朝着地球的这一面中央,放置着边长为132米正方形的送电天线。 发电卫星的组成,除发电、集电以及送电部分外,还有起通信、控制作用的总线部分,形成卫星骨架的结构部分,用于组装和维护用的机器人等,总重量约240吨。 接收卫星发回来的微波能束,并将其变换为电力的地面设施称为受电设施。它由负责卫星跟踪和进行受电控制的控制部分,以及负责送电和储电的部分等组成。为了能把卫星发送回来妁全部电力都接收下来,需要直径2公里的受电设施。受电设施分布在若干地方,当卫星每次对它一个地方的受电设施送屯时,可以受电的时间为227秒,而受电的周期为116分钟左右,可平均连续地发出250千瓦的电力。 由于受电设施非常庞大,所以有人设想采用线网状反射式的受电设施,可以只把电波集中起来,而能从网眼中透过80%以上的阳光,[ ]不对环境造成影响。 从卫星上向地面受电设施送电的机构,接收地面上往卫星发送的导向电波束。根据这一电波束,卫星便能计算出受电设施位于什么地方,然后相应地改变电气上的相位,使微波束朝着受电设施方向送电。所以受电设施以外的地方,不用担心高能电微波束的照射。就是在受电部分电力密度最高处的受电设施中心部分,电力密度也在每平方厘米1毫瓦以下(每平方米10瓦以下),完全能够满足在2.45兆赫时国际安全标准的要求,对人体和环境都不会有影响。 下列说法符合原文意思的一项是( )。
A. 要把卫星发送回来的全部电力都接收下来,太阳能发电卫星需要直径2公里的地面受电设施
B. 太阳能发电卫星受电设施是指能负责卫星跟踪并接收卫星发回来的微波束的地面设施
C. 太阳能发电卫星可平均连续地发出250千瓦的电力
D. 太阳能发电卫星庞大的受电设施可以只把电波集中起来,从而不对环境造成影响