1 . COVID-19 shutdowns forced people out of work and pushed tens of millions into poverty worldwide. Governments tried hard to provide aid. It was easy in a small country, but difficult for a country with large population and vast rural areas.     1     Doing a detailed, nationwide, house-to-house survey takes people time and money. Luckily, satellites can see poverty from space.

Researchers have been finding ways to identify areas of wealth and poverty in satellite images. Through some satellite data and aerial images of one town or another, you can sort of tell whether it’s wealthy or not. Wealthier homes tend to have metal roofs while poor homes tend to have thatched roofs. Wealthier neighborhoods have paved roads and bigger plots of lands, more spaced out.     2     The researchers trained artificial intelligence (AI) to recognize these patterns.

    3     The researchers put AI to work studying patterns of mobile phone use in those regions. Rich people will make just more phone calls than poor people. They also might make more expensive international calls. They might use more mobile data because they have smartphones.     4    

The researchers use the system to identify about 60,000 people to receive benefits. The advantage of the satellite imagery and phone data approach is that it’s extremely fast and very convenient.     5     In shocks like climate disasters where there’s no time or way to get detailed information on the ground, satellites mobile phones and AI could help deliver aid quickly to people in need.

A．It was opposite in a big country.

B．How do they locate the neediest people?

C．So there’s a lot of information in the images.

D．Most importantly, it’s very cheap to carry out.

E．Worse still, it’s not so economical as a house-to-house survey.

F．However, in general, poorer people will just have feature phones.

G．What the researchers did next was to target the neediest people in those regions.

2 . Directions: Fill in each blank with a proper word chosen from the box. Each word can be used only once. Note that there is one word more than you need.

A. double          B. intense          C. pressures       D. stock          E. agriculture       F. trapped G. withdrawal     H. availability   I. drive             J. expanding     K. rising

Throughout history, people have fought bitter wars over political ideology, national sovereignty and religious expression. How much more     1     will these conflicts be when people fight over the Earth’s most indispensable resource water? We may find out in the not-too-distant future if projections about the     2     of water in the Middle East and other regions prove correct.

Less than three percent of the planet’s     3     is fresh water, and almost two-thirds of this amount is     4     in ice caps, glaciers, and underground aquifers too deep or too remote to access. In her book, Pillars of Sand-Can the Irrigation Miracle Last, Sandra Postel outlines three forces that     5     tension and conflict over freshwater. Using up the water “resource pie”. In India, the world’s second-most populous nation, with over 1 billion inhabitants, the rate of groundwater     6     is twice that of recharge, a deficit higher than in any other country. Although water is a renewable resource, it is not a(n)     7     one. The freshwater available today for more than 6 billion people is no greater than it was 2,000 years ago, when global population was approximately 200 million. (The current U.S. population is 287 million.)

Global     8     accounts for about 70% of all freshwater use. In five of the world’s most water-stressed, controversial areas the Aral Sea region, the Ganges, the Jordan, the Nileland and Tigris-Euphrates population increases of up to 75% are projected by 2025. With the fastest rate of growth in the world, the population of Palestinian territory will more than     9     over the next generation. Most experts agree that, because of geography, population     10     and politics, water wars are most likely to break out in the Middle East, a region where the amount of available freshwater per capita will decrease by about 50% over the next generation.