Paul is the referee!（）

此题为判断题(对，错)。

Paul is colorblind. He cannot differentiate between red and green, or between yellow and blue.

The underlined word “differentiate ” could best be replaced by _______

A、share

B、distinguish

C、merge

D、unite

此题为判断题(对，错)。

A. abide

B. abide on

C. abide to

D. abide by

A、declining incomes

B、growing debt

C、high costs of education

D、All of the above

Capitalism has suffered a series of mighty blows to its reputation over the past decade. The sense of a system rigged to benefit the owners of capital 1 the expense of workers is profound. In 2016 a survey found that more than half of young Americans no longer 2 capitalism. This loss of faith is dangerous, but is also 3 . Today’s capitalism does have a real problem, just not 4 that protectionists and populists like to talk about. Life has become far too comfortable for some firms in the 5 economy, while, in the new economy, tech firms have rapidly built market power. A revolution is indeed needed—one that 6 competition, forcing down abnormally high profits today and 7 that innovation can thrive tomorrow. Countries have acted to 8 competition before. At the start of the 20th century America broke up 9 in railways and energy. After the second world war West Germany put the creation of 10 markets at the centre of its nation-building project. The establishment of the European single market, a(n) 11 championed by Margaret Thatcher, prised open stale 12 markets to 13 foreign firms. Ronald Reagan fostered competition across 14 of the American economy. A similar 15 is needed today. Since 1997 market concentration has 16 in two-thirds of American industries. 17 of the economy is made up of industries in which four firms control more than two-thirds of the market. In a healthy economy you would expect profits to be competed down, but the free cash-flow of companies is 76% above its 50-year average, relative 18 GDP. In Europe the trend is similar, 19 less extreme. The average market share of the biggest four firms in each industry has risen by three percent since 2000. On both continents, 20 firms have become harder to dislodge. 1.

A、at

B、in

C、for

D、by

A．错误

B．选 B 。图的邻接矩阵表示是唯一的，每条边的信息存放在矩阵中确定的位置。邻接表表示则不唯一，取决于各条边读入的先后次序，以及在边链表中采用前插法还是后插法来插入这些边。

C．不正确

D．概念错误

A．油罐的检尺点是在检尺口上的一个固定点或标记，即从该点起进行测量

B．进行油高测量时，计量人员应右手握住尺柄，左手拇指和食指轻轻固定下尺位置，将量油尺从导尺槽垂直徐徐放入油罐

C．油品取样操作应符合GB/T4765-1998《液体石油手工取样法》中的相关规定

D．在POS系统中进行油罐计量时，可以通油罐过液位仪直接读取相关数据，也可以通过人工模式读取油罐相关数据

那是一个再也经典不过的夜晚,喧嚣的墨西哥城终于渐渐49 了下来,奥运会田径比赛的主体育场也慢慢地被笼罩在夜色之中,享誉国际的记录片制作人格林斯潘将当天马拉松比赛优胜者们领取奖杯、庆祝胜利的镜头都制作完毕了,才发现体育场内已空无一人。“我该回宾馆休息了。”早已疲倦的他自言自语地说。就在格林斯潘刚要离开体育场时,他突然看见一个右腿沾满血污、绑着绷带的人跑进体育场,这个人气喘吁吁、一瘸一拐地跑着,但却没有停下来。他顺着跑道跑了一周,抵达终点后,突然瘫倒在地......格林斯潘意识到,这是一名马拉松运动员。 在好奇心的驱使下,格林斯潘走了过去,询问这名运动员为什么要这么吃力地跑到终点。 ‘这位来自坦桑尼亚,名叫艾克瓦里的年轻人轻声回答道:“我的国家从两万公里外把我送到这里,不是叫我在这场比赛中起跑,而是派我来完成这场比赛的。我要跑到终点,尽管我已经在奔跑队伍的最后面,但我有着和他们一样神圣的目标:我要跑到终点!即使已经不再有人为我加油,我也必须这样做,因为我的背后有着祖国的凝望......” 听了艾克瓦里的话,格林斯潘早已热泪盈眶。很快,他就用镜头将奥运史上这最动人的一幕[52】传递到了世界上的每一个角落。【49】文中49处应该填写的词语是:

A．安定

B．安稳

C．安全

D．安静