Questions 46-50
        The popular notion that the COVID-19 pandemic has been "good for the environment"--that nature is recovering whilehumanity stays at home–appeals to many people grasping for some upside to the global tragedy. Reality, though, may notcooperate with such hopes.        The benefits many found heartening early on--from cleaner air to birdsong newly audible as cars and planes wentquiet-were always likely to be temporary. And with lockdowns easing, they have already begun to dissipate. Now, someexperts fear that the world risks a future with more traffic, more pollution, and climate change that worsens faster than ever. It'stoo soon to know whether that gloomy scenario will play out, but concerning signs seem to be growing all around the world.        In early April 2020, with shutdowns widespread, daily global carbon emissions were down by 17 percent compared to lastyear. But as of June 11, 2020, new data show that they are only about 5 percent lower than at the same point in 2019, eventhough normal activity has not yet fully restarted.        "We still have the same cars, the same roads, the same industries, same houses," says Corinne Le Quere, professor ofclimate change at the University of East Anglia in Britain and lead author of the original study and subsequent update. "So assoon as the restrictions are released, we go right back to where we were."
【題組】46. What is the main iden of this article?