玉米需要的大量元素及其比例。

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问题:

玉米需要的大量元素及其比例。

考点:农艺师考试玉米玉米题库
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Many of us don’t pay attention to the importance of eye care. It’s said that if you take care of your body, then you can be healthy. That is why our eyes should be given a lot of care. Natural eye care should be put in a number one place.

There are several causes leading to poor eyesight like not enough food, gene(基因) and aging(年龄增长). Televisions, computers and reading are also the causes of having poor eyesight.

If you happen to work in front of the computer, it is best to take a rest every once in a while. Something dirty can cause redness and they will make you feel uncomfortable. It is bad for your eyes, too. If this happens, the best way is to clean your eyes by using cold water. You must also try your best to protect your eyes from harmful thing. For example, sunglasses are not just fashion but they can also serve as a great way to protect your eyesight from UV rays.

Eating healthy foods will do good to your eyesight. Remember that vitamins(维生素) A、C and E are good for eyes. Try to eat food groups that have these vitamins. And you should do eye exercises because exercise protects your eyesight, too. If a person exercises regularly(规律地) 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. Being happy all the time can be helpful to a person’s eyesight, too. In a word, eye care is very important, no matter how old a person is.

小题1: __________ is the most important way to protect our eyes.

A.Natural eye care

B.Taking medicine

C.Seeing the doctor

D.Being happy all the time小题2:All the following causes can lead to bad eyesight except _________.

A.age

B.height

C.reading

D.computer小题3: What should you do if you have to work in front of the computer?

A.Eat healthy foods.

B.Clean the eyes by using cold water.

C.Wear a pair of sunglasses.

D.Have a rest after working for a while.小题4: What do the under words “UV rays” mean?

A.沙土

B.闪电

C.紫外线

D.超声波小题5:Which is the best title of the passage?

A.Ways of Eye Care

B.Ways of Eye Exercises

C.Way of Being be Happy

D.Way of Being Healthy

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男性,43岁。上腹隐痛半年伴反酸、嗳气、全身乏力、食欲下降、消瘦、贫血,并有黑便。

最合适的处理是().

A.化学疗法

B.中医治疗

C.以手术为主的综合治疗

D.手术治疗

E.免疫疗法

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儿童语句产生的评定和分析通常采用两种方式:儿童说出的句子中()、句子中()。

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下列有关革兰阴性细菌败血症的叙述哪项不正确()

A.病前一般情况较差

B.容易发生低蛋白血症

C.40%发生感染性休克

D.严重者可有DIC

E.易出现迁徙性病灶

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整组铺设道岔时,钢轨绝缘位置原则上应设在出站信号机同一坐标处,如信号机位置与现场轨缝位置不一致时,为了避免串轨、换轨或锯断钢轨,容许信号机位于钢轨绝缘前方(按发车方向)不大于()m处。

A、0.5

B、1.0

C、1.5

D、3.0

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