矿井必备的防治水图件有哪些？

阅读理解。

     As young students, you have many dreams. These dreams can be very big, such as winning the Nobel

Prize, they can also be small, such as becoming one of the best students in your class.

     Once you find a dream, what do you do with it? Do you ever try to make your dreams real?

     Andrew Matthews, an Australian writer, tells us that making your dreams real is life's biggest challenge

(挑战). You may think you're not very good at some school subjects, or that it's impossible for you to

become a writer. Those kinds of ideas stop you from realizing (实现) your dream.

     In fact, everyone can realize his dream. The first thing you must do is to remember what your dream is.

Don't let it leave your heart. Keeping telling yourself what you want every day and then your dream will

come true faster. You should know that a big dream is, in fact, made up of many small dreams.

     You must also never give up your dream. There will be difficulties on the road to your dreams. But the

biggest difficulty comes from yourself. You need to decide what is the most important. Studying instead of

watching TV will help you to get better exam results, while saving five yuan instead of buying an ice cream

means you can buy a new book.

     As you get closer to dream, it may change a little. This is good as you have the chance to learn some-

thing more useful and find new hobbies.

1. The biggest difficulty on the road to your dreams comes from _____.

A. yourself

B. your friend

C. your school

D. your parents

2. Which of the following isn't mentioned (提及) in this passage?

A .You may think you're not good at some school subjects.

B. Making your dreams real is life's biggest challenge.

C. You must never give up your dream.

D. Listening to English more can help you realize your dream.

3. If we have dreams in our hearts and work hard, our dreams _____.

A. can't be realized

B. can be very small

C. will come true

D. can be very big

4. How do you make your dream come true faster?

A. Remember what your dream is.

B. Don't let your dream leave your heart.

C. Keep telling yourself what you want every day

D. A, B and C

5. The best title (标题) of this passage is _____.

A. How to become a writer

B. How to make your dream real

C. A big dream is made up of small dreams

D. Everyone can realize his dream

某百货商场服装柜在销售中发现“宝乐”牌童装每天可售出20件，每件赢利40元，经市场调查发现，如果每件童装每降价4元，那么平均每天可多售出8件．

（1）为扩大销售量，增加赢利，减少库存，商场决定采取适当的降价措施，问：要想平均每天在销售这种童装上赢利1200元，那么每件童装应降价多少元？

（2）若该商场要在销售这种童装上平均每天所获得的利润最多，这种童装应如何定价？

眼科疾患的治疗，错误的是（）

A.睑缘炎出现溃疡时的直流电离子导入锌离子

B.视神经炎时可采用高强度氦-氖激光血管内照射

C.睑腺炎后期形成肉芽肿时直流电离子导入碘离子

D.睑板腺囊肿肿物较大伴有自觉症状时应手术切除

E.超短波治疗泪囊炎时，急性期予无热量，慢性期予微热量

阿托品对眼的作用是散瞳

A．升高眼内压，视远物模糊

B．升高眼内压，视近物模糊

C．降低眼内压，视近物模糊

D．降低眼内压，视远物清楚

E．升高眼内压，视近物清楚

怎样防止燃气轮机贫油？