根据原文第二段"Farmers in these areas use groundwater to water their crops. At present drawing rates, the study predicts that 42 to 79 percent of water areas around the world where groundwater is drawn up for use at the surface will reach tipping points by 2050.这些地区的农民使用地下水...
Ⅱ.阅读七选五Most of the earth's freshwater sits underground.Tapping the groundwater has enabled farming in drierplaces. One example is the California Central Valley.16 Groundwater is what made this region's cropproduction so bountiful.17 Natural waterways will begin to empty, whichcan hurt freshw...
根据Lake Baikal, one of the..lies inRussia可知选C2.D 细节理解题。根据 Though it is only the ninth largestlake in area on the earth可知:按面积计算,贝加尔湖是世界上第9大湖,即有8个湖面积比它大。故选D。3.B 推理判断题。由 the lowest point is more than 1620meters deep可知贝加尔湖的最深...
英语阅读理解Water is very important to us.We cannot live without it.There is a lot of water on the earth,but we cannot use most of it.About 97.4% of the earth’s water is salty.Most of the freshwater is snow and ice near the North and South Po
The earth’s most rich resource—water has become one of the most precious resources in the United States as rivers, lakes, and freshwater reservoirs are increasingly exploited for human use. Consequently, using precise farming techniques to refine “irrigation scheduling” is a research area of pa...
The deepest and oldest lake on Earth, Lake Baikal is reputed to boast some of the clearest and cleanest waters around. To top it all off, the enormous freshwater lake contains more water than all the Great Lakes in North America combined. ...
Here's a list of the most threatened animal species in the world. It approximates how many of each exist in the wild and also indicates which efforts, if any, are being used to save them.
There are a total of 1,223 UNESCO World Heritage Sites in the world (as of 2024: 952 Cultural, 231 Natural, and 40 Mixed) in 168 countries. Here are the top 20 countries having the most UNESCO World Heritage sites. What is a UNESCO World Heritage Site? A UNESCO World Heritage Site ...
Earth Day is April 22.But on all other days,we must also remember it.The water we use is the most important natural resource(自然资源)on the earth. Water covers 70 percent of the earth's surface(表面).But most of that is sea water.We can't use it for many ...
the ocean breeze and hear the sound of the waves crashing on the shore. So let us take you around the world to the most beautiful islands on earth. We’ve had the privilege to visit many a beautiful tropical island paradise so we’ve rounded up our favorite to inspire wanderlust in you...