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You probably know about the Titanic, but it was actually just one of three state-of-the-art (先进的) ocean ships back in the day.

All in all, the Olympic class ships were marvels of sea engineering, but they seemed cursed to suffer disastrous fates.

The Olympic got wrecked before the Titanic did, but it was the only one to survive and maintain a successful career of 24 years.

While two of these ships sank, they were all designed with double hulls (船体) believed to make them "unsinkable", perhaps a mistaken idea that led to the Titanic's and the Britannic's tragic end

Summarize the main idea of the text in your own words.

What does the passage say about the three Olympic class ships?

What did White Star Line have in mind when it purchased the three ships?

What is said about the fourth stack of the ships?

What might have led to the tragic end of the Titanic and the Britannic?

What happened to the ship Olympic in the end? （含图）（含图）

Text 8 Read the following passage and get the general idea quickly The Impact of Self-driving Vehicles on Workforce Imagine you enter a car with no steering wheel, no brake or accelerator pedals（踏板）. Under a voice-activated command, you say an address. "The fastest route will take us 15.3 minutes. Should I take it?" You say "yes" and you are on your way. The car responds and starts moving all by itself. All you have to do is sit back and relax. How weird would it be if, one day in the future, everyone had such a car. No crazy driving, no insults, no cutting in; traffic laws would be respected and driving much safer. On the other hand, imagine the cost savings for local police enforcement and town budgets without all those speeding and parking tickets. A new technology has the potential to change modem society in radical ways. T here's no question that self-driving vehicles could be an enormous benefit t. T he potential for safer cars means accident statistics would drop: some 94% of road accidents in the U.S. involve human error. Older drivers and visually-or physically-impaired people would gain a new level of freedom. Maintaining safe speeds and being electric, self-driving cars would drastically reduce pollution levels and dependency on non-renewable fuels. Roads would be quieter, people safer. But we must also consider the impact of the new technology on those who now depend on driving for their livelihoods. According to the U.S. Depart ment of Labor, in May 2015 there were 505,560 registered school bus drivers. T he American Trucking Association lists approximately 3.5 million professional truck drivers in the U.S. T he companies developing self-driving vehicles should be partnering with state and federal authorities to of fer retraining for this massive workforce, many of whom will be displaced by the new technology. T his is similar to what's happening in the coal and oil industries, a situation that fuels much of the current political discontent in this country. New technologies will, and should, be developed. T his is how society moves forward. However, progress can't be one -sided. It is necessary for the companies and state agencies involved to consider the ethical consequences of these potential changes to build a better future for all. （2018年12月大学英语四级考试真题）【缺少答案，请补充】

On the other hand, imagine the cost savings for local police enforcement and town budgets without all those speeding and parking tickets.

Older drivers and visually-or physically-impaired people would gain a new level of freedom.

The companies developing self-driving vehicles should be partnering with state and federal authorities to offer retraining for this massive workforce, many of whom will be displaced by the new technology. This is similar to what's happening in the coal and oil industries, a situation that fuels much of the current political discontent in this country.

The companies developing self-driving vehicles should be partnering with state and federal authorities to offer retraining for this massive workforce, many of whom will be displaced by the new technology. This is similar to what's happening in the coal and oil industries, a situation that fuels much of the current political discontent in this country.

It is necessary for the companies and state agencies involved to consider the ethical consequences of these potential changes to build a better future for all.

What would be the impact of the extensive use of driverless cars?

How would the elderly and the disabled benefit from driverless cars?

What would be the negative impact of driverless cars?

What is the result of the introduction of new technologies in energy industries?

What does the author suggest businesses and the government do?

For the past several decades, it seems there's been a general consensus on how to get ahead in America: Get a college education, find a reliable job, and buy your own home.

Overwhelmingly, the results show that today, the idea of the American dream-and what it takes to achieve it-looks quite different than it did in the late 20th century.

While some, like Maeda, emphasized the value of the degree rather than the education itself, others still see college as a way to gain new perspectives and life experiences.

To Fendley, a sense of drive and purpose, as well as an effective high-school education, and basic life skills, like balancing a checkbook, are the necessary ingredients for a successful life in America.

It used to be commonly acknowledged that to succeed in America, one had to have____.