Are people happier in nature with blue skies overhead and fresh green grass underfoot? Could noisy streets, (61)_________ (crowd) with cars and people, make us unhappy? The World Health Organization estimates that 54 percent of the world’s population lived in urban areas in 2014. The WHO adds that that amount (62)_________ (increase) to 66 percent by 2050.
People often move to cities for (63)_________ (good) jobs and more cultural activities. But are they putting (64)_________ (they) at risk?.
Experts say that natural environments or green spaces do a lot of good for our mental health.
Many studies have shown that nature can calm us and make us feel happy. Nature, experts say, can also help us learn better. And (65)_________ (experience) nature helps people recover from the mental tiredness that (66)__________(come) from day-to-day work.
Mental health experts say some research suggests that city living might hurt our mental health, (67)_________ they cannot say exactly why. “What are the specific (68)_________ (aspect) of the urban environment (69)________ causes some people to develop mental health issues?” asked AndraMechelli, a doctor at Kings College, London.
Researchers have found that being outdoors, seeing trees, hearing birdsong, seeing the sky, and being (70)______touch with nature are associated with higher levels of mental well-being.
61. crowded. 考查过去分词作后置定语。
62. will increase.考查动词时态。由后句的66 percent by 2050.得知用将来时。
69. which / that.考查定语从句在句中作主语。
70. in touch with.考查固定搭配。