Our eyes are very important. But many of

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Our eyes are very important. But many of us pay little attention to the importance of eye care. It is said that if you take care of your body, then you can surely be healthy. That is why our eyes should be given a lot of care.      小题1:    .
There are several causes leading to your poor eyesight. Like Televisions, computers and reading. Something dirty can cause redness (红肿) and they will make you feel uncomfortable. If this happens, the best way is to clean your eyes by using cold water.     小题2:   . For example, wearing sunglasses can serve as a great way to protect your eyesight from UV rays (紫外线) in the strong sunlight.
Some foods will do good to your eyesight. Remember that vitamins A, C and E are good for eyes. Try to eat food groups that have these vitamins.      小题3:   . If a person exercises regularly and eats the right kind of food, his eyes will stay in good condition for a long time.
All above are natural ways of eye care that help us keep healthy eyes.      小题4:    . In a word, eye care is very important, no matter how old a person is.

A. You must also try your best to protect your eyes from harmful things
B. Being happy all the time can be helpful to a person’s eyesight, too
C. And you should do eye exercises because exercise protects your eyesight, too
D. Naturally eye care should be put in a number one place
 
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题型:完形填空

如果人类大量捕杀鹰,草原生态系统将受到严重破坏,这说明  [ ]

A.生态系统无调节能力

B.生态系统的调节能力是无限的

C.只有绝对禁捕野生动物,生态系统才有调节能力

D.生态系统调节能力是有限的

题型:完形填空

关于发病机制的重要调节激素,描述不正确的是()

A.抗利尿激素可导致尿钠排泄增多、水潴留和血钠降低等

B.阿片样肽可增强催乳素和生长激素的释放,而抑制促甲状腺素和促性腺激素释放

C.心房利尿钠肽具有较强的利钠和利尿作用,可降低循环容量

D.前列腺素主要参与血管活性调节和凝血机制

E.血管活性肠肽可舒张血管、增加心脏和脑血流,提高外周血管阻力

题型:完形填空

紫外-可见吸收光谱光谱图中常见的横坐标和纵坐标分别是()

A.吸光度和波长;

B.波长和吸光度;

C.摩尔吸光系数和波长;

D.波长和摩尔吸光系数

题型:完形填空

工伤事故属于的范畴是

A.职业病

B.广义的职业病

C.法定的职业病

D.职业性损害

E.职业性疾患

题型:完形填空

检查风机油位正常时,油位应在()。

A.1/2~2/3

B.1/2

C.1/3

D.油位计中线

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