19.Tom()the car accident if he hadn’t drunk alcohol before driving.

27.Teachers are some of the most important professionals in the world. They are responsible___21___preparing future generations to become productive and honest citizens, who will___22___to society for the whole of their adult life.Obviously, the most common reason___23___teachers decide to teach is the ability to make a difference. There are many professions that give people the ability to have a( )___24___impact on the world and change people’s lives,___25___few professions have a direct impact on___26___a better society as teachers do. People tend to___27___their teachers for years after they finish school, for good teachers can___28___their students to become something that they___29___thought they could be, or to work___30___a field that they thought they did not___31___.Teachers are also important because they provide___32___for their students. In certain low-income areas___33___some students may not have both of their parents___34___, teachers can provide an important influence that helps their students make the right___35___, even when they are not in the classroom. Generally, teachers’impact on students can last all through their life.以下选项27题答案为()。

67.Anyone can get into the club,()he is a member there.

196.Seven years have passed()I came to America.

214.In some countries each of the citizens()to decide government policies.

113.I didn't know the answer,().

111.My parents always buy()my birthday.

41.In 2011, a dog owner named Robert uploaded a video titled“Guilty!” to YouTube. He had come home finding his two dogs near an empty bag of cat treats. The first dog behaved calmly. But the second dog, Denver, sat shaking in a corner, her eyes looking down, which made Robert believe it was she who had done it. Seeing her “apparent admission of guilt,” he yelled at her, “You did this!” Denver beat her tail nervously. “You know the routine. In the kennel(狗窝)!” Following the command, the dog shut herself in.The video quickly gathered a flood of comments. Since then, “dog shaming” has become popularOn the internet, as owners around the world posted beside notes shots of their trembling pets in which the dogs seemed to admit bad behavior. For instance, “I ate an extra large pizza,” admits a chocolate Lab. Human enthusiasm for guilty dogs seemed growing.But according to a researcher at Barnard College, what we consider to be a dog’s guilty look is no sign of guilt at all. In a 2009 study, the researcher had owners forbid their dogs from eating an attractive treat, and then asked the owners to leave the room. While each owner was gone, the researcher either removed the treat or fed it to the dog. When the owners returned, they were told-regardless of the truth-that their dogs either had or had not eaten it. If owners thought their dogs had done something wrong, blames followed, and guilty looks quickly emerged. Yet dogs who hadn’t eaten the treat were more likely to appear guilty than dogs who had-so long as their owners scolded them. Far from signaling regret, one group of researchers wrote in a 2012 paper, the guilty look of dogs is very likely a means to show obedience(顺从)to their owners.How did people react to Robert’s video?

55.There are many interesting news items in BP’s(英国石油公司)annual Energy Outlook just published. But perhaps the most astonishing suggestion in the report is the idea that cutting back on plastic use could make matters worse. This might be what you would expect BP to say. After all, as one of the world’s biggest oil companies, it makes a lot of money from selling products in plastic. But let’s look at the thinking behind BP’s argument.If the current opposing idea about the use of plastic continues, there could be a worldwide ban on single-use plastics by 2040. But the document argues that switching plastic for other materials will have a bigger cost in terms of energy and carbon emissions(排放). That sounds like the law of unintended(非故意的)consequences in action. When plastic bags are measured against paper or cotton substitutes, a BBC analysis found there wasn’t a great deal of difference in their environmental impact. Paper bags require fewer reuses to make them more environmentally friendly than single-use plastic bags, which means customers have to replace paper bags more frequently.Environmentalists, though, are not entirely convinced. They think that BP is stressing the problem of banning plastic for its own interest. “While it’s true that it takes less energy to produce and transport plastic than glass, a glass bottle can be reused dozens of times and is recyclable. Plus, materials like glass when they escape collection don’t go on polluting our oceans and rivers for hundreds of years," said Louise Edge, from Greenpeace UK.Steps to encourage recycling are being taken. The UK, for example, will introduce a new tax on the manufacture and import of plastic packaging in 2022. There are also lots of developments taking place with alternative materials. These may be the final defense against the unintended consequences of plastic bans.What measure is being taken by the UK to cut back on the use of plastics?

218.I didn't attend the conference, but I wish I()there.