This is a practice of TOEFL integrated essay. Thanks to whomever will fix this article for me, (Note: next time a useless title = suspension
the article about controlling precipitation
The listening context totally refutes the reading passage about the concept of "cloud seeding." Cloud seeding is a way to reduce damage from hail, which fall from the sky and destroy crops in the field.
To begin with, the article uses laboratory experiments to prove cloud seeding can reduce the hail from forming. Though the speaker admits it might be useful in the laboratory, she also points out this experiment cannot apply in real life. She indicates that cloud seeding may result in lack of water since it stops the forming of cloud or snow.
Secondly, the author illustrates a successful case in Asia by controlling precipitation in urban areas. On the contrary, the speaker argues the experience of Asia cannot be reprouduced in the U.S. since it only works in urban area. She also holds that pollution air from cars in the city could build a favorable environment for cloud seeding, which is not suitable for unpolluted region in the agricultural field in the U.S..
Thirdly, the author states that comparing to previous years, the area used cloud seeding has less damages. Nevertheless, the speaker opposes this by arguing in the neighboring eastsouth area also has the same condition. She thinks this is a natural variation, and has nothing to do with the cloud seeding.