4 . The world is going through a basic transformation,which is changing the way we live, work and think. The Fourth Industrial Revolution is bringing dramatic change and giving rise to a future filled with exciting opportunities and new challenges. Together, governments and businesses must find solutions to society's most pressing needs—from creating a carbon-free economy to tackling population growth and urbanization.

In any period of rapid change there is a trend to look for a simple method,to greet the new things and replace the old way of doing things. But a closer look at the facts tells a different story. Complex problems require many solutions working in harmony to enable positive change.

The challenge for scientists and engineers is to provide solutions in fact, data and today's realities. And while technologies offer new tools to help uncover solutions, the process also requires hard work, imagination and lots of improvement.

Success rests on performing practical, realistic, long- term solutions that make the world cleaner, safer and more sustainable(可持续的).

The environment is a case in point. Much of the public debate has centered on the central role of renewable power sources in realizing a low-carbon energy future. While the industry is fully behind developing renewables, today we understand that a low or zero-carbon future depends on adopting a multifaceted approach.

We cannot control sunshine levels or decide when the wind blows, which means solar power and wind power generators will produce too much or too little energy at times. The transition to renewables needs to take account of serious considerations.

Batteries have been much discussed as a means of storing extra energy, but there are other choices. Power-to- X technologies enable spare energy created by renewables to be stored and redistributed when and where it is needed.

1. Which of the following best explains the underlined word“tackling" in Paragraph 1?

A．Caring about.	B．Dealing with.
C．Going through.	D．Suffering from.

2. What does the author expect scientists and engineers to do?

A．Offer new tools to help uncover solutions.

B．Look for a simple method to face the future.

C．Find out ways to solve the problem.

D．Realize a low-carbon energy future.

3. What does the author think of the solar power and wind power?

A．Powerful.

B．Safe.

C．Clean.

D．Unsteady.

4. What do we know about Power-to-X technologies?

A．They can adjust power supply.

B．They take the place of batteries.

C．They help make more electricity.

D．They can create power from wind and sun.