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Children today spend more time stare at computer 【S1】______ and TV screens both at school and at home. Scientific 【S2】______
Children today spend more time stare at computer 【S1】______ and TV screens both at school and at home. Scientific 【S2】______
admin
2019-11-02
24
问题
Children today spend more time stare at computer 【S1】______
and TV screens both at school and at home. Scientific 【S2】______
studies show an epidemic of myopia (also known as
nearsightedness) has struck children—and it is spreading faster
in many countries. Doctors warn that sitting too close
to a computer, especially fixes your eyes at a computer or 【S3】______
TV screen from close range, increases the risk of myopia.
The cause of myopia is difficult to explain in simple
terms. While some say sitting near computers and TV screens
is one of the reasons, others say children born to nearsighted
parent/parents are vulnerable. 【S4】______
Can genes or the environment, or a combination of two 【S5】______
explain the growing prevalence of myopia across many
countries? How can parents understand what causes myopia
and the risks it poses to their children’s eyesight?
Children suffering from myopia have trouble seeing
close objects clearly. The eyeball is thought to become 【S6】______
longer, because of which less effort is needed to see up
close. Moreover, the elongated eye can no longer focus on 【S7】______
distant objects.
Symptoms of myopia are rarely noticed in early 【S8】______
childhood. Myopic children must hold books very close 【S9】______
to their face or may not be able to read the writing on the
blackboard in school. They may squint and complain of
head and eyestrain. 【S10】______
【S5】
选项
答案
∧ the
解析
许多国家患近视的人数呈上升趋势,成为一种普遍的现象,这与基因或环境有关系吗?或者和两者都有关系?特指“基因”与“环境”这两者,需要加定冠词the。
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0
专业英语八级
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