一名5岁儿童经睫状肌麻痹下验光为：OD+5.50DS=0.1，OS+1.50DS=0

发布时间：2017-05-08 22:48 │ 来源：www.tikuol.com

题型：单项选择题共用题干题

问题：

一名5岁儿童经睫状肌麻痹下验光为：OD+5.50DS=0.1，OS+1.50DS=0.9。眼底及其他检查未见异常。

为了治疗弱视，应采取的措施是（）

A.遮盖左眼，加精细作业

B.遮盖右眼，加精细作业

C.1：1双眼交替遮盖，加精细作业

D.遮盖双眼

E.加强营养

考点：眼科(医学高级)眼科综合练习眼科综合练习题库

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下列各句中，加线的成语使用不恰当的一项是（3分）

A．有人认为天才之作总是合天地之灵气，妙手偶得，据说《蓝色多瑙河》就是作者在用餐时灵感一来随手写在袖口上的。

B．在我父亲的记忆里，那是一段极为特殊、不堪回首的岁月，人事的变迁如白云苍狗，谁也无法预料。

C．野花肆意开放，花丛间常可见一对对小而伶俐的麻褐色野兔，在那里追逐嬉戏，天真烂漫，活灵活现。

D．在四十四年的记者生涯中，他创作了一批优秀的新闻作品，在中国新闻史上留下了浓墨重彩的一笔。

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下列关于自由落体运动的说法正确的是（）

A．在真空条件下，石头将比纸片先落地

B．自由落体运动是初速度为0，加速度大小为g，方向竖直向下的匀加速直线运动

C．离地20m的高度，物体在从赤道落下所用的时间比在从北极落下所用的时间长

D．随着高度的增加，重力加速度大小不变

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EXC9000静态励磁调节器在（）条件下发同步故障。

A、同步电压比机端电压低15%

B、机端电压大于40%

C、同步电压大于20%

D、同步电压大于10%。

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陆军既能独立作战，又能与（）联合作战。

A.天军

B.海军

C.空军

D.第二炮兵

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题型：单项选择题共用题干题

The first 50 years of the next millennium will be critical for the world’s population. By 2050 population growth should have leveled off, but by then we’ll have 10 billion people -- two-thirds as many again as we have today. The rate of population growth is something we can choose right now, though it’s not something that just happens, but a matter of human choice. The choice is a complicated one, with many variables, but it remains a choice.
If we want to prevent a population explosion, we should take action now -- or assist the poorer countries to do so. They need better government, better institutions, better labor and capital markets, better schools.
Anything that increases the value of women’s time and adds to the cost of caring for a child makes a woman less likely to have that child. Since big families are often seen as safety nets for illness and old age, improving poor people’s access to insurance, pensions and welfare institutions also has a major impact. This can be as simple as rural credit, providing a means of saving. Finally, there is education -- both for women and, perhaps even more important, for the next generation of children.
These steps are there to be taken, but there appear to be some countries that are not seriously trying at the moment. If we cannot achieve that we will certainly not control population.
That said, I don’t feel pessimistic that we are going to run out of resources: we are becoming more efficient at producing food faster than the rate at which population is increasing. There is, however, a risk that we will wreck the environment so effectively that the world will no longer be an attractive place to live. That really would be a dismal outcome, to reach world population equilibrium only to find we’d destroyed the natural environment in the process.

By 2050, the population growth will ______.

A．rise steeply

B．fall sharply

C．come to a halt

D．remain even

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