明律是如何严禁臣下结党和内外官交结？

由于我国地域辽阔，同一种商品在甲地可能供不应求，出现“物以稀为贵”的现象，而在乙地可能出现“货多不值钱”的现象。对于甲、乙两地市场情形，说法正确的是[ ]

①甲是卖方市场

②乙是卖方市场

③地域因素是影响价格的直接因素

④地域因素可能造成价格差异

A．①②               

B．③④          

C．①④              

D．②③

阅读理解。

     When I was small and my grandmother died, I couldn't understand why I had no tears. But that night

when my dad tried to cheer me up, my laughs turned into crying.

      So it came as no surprise to learn that researchers believe crying and laughing are controlled by the

same part of the brain. Just as laughing has many health advantages, scientists are discovering that so

does crying.

      Whatever helps us to reduce pressure is important to our emotional health, and crying seems to

work well. One study found that 85 percent of women and 73 percent of men report feeling better after

crying.

      Besides, tears attract help from other people. Researchers agree that when we cry, people around us

become kinder and friendlier and they are more ready to provide support and comfort. Tears also enable

us to understand our emotions better; sometimes we don't even know we're very sad until we cry. We

learn about our emotions through crying, and then we can deal with them.

      Just as crying can be healthy, not crying---holding back tears of anger, pain or suffering-can be bad

for physical health. Studies have shown that too much control of emotions can 1ead to high blood

pressure, heart problems and some other illness. If you have a health problem, doctors will certainly not

ask you to cry. But when you feel like crying, don't fight it. It's a natural, healthy and emotional response.

1. Why didn't the author cry when her grandmother died?      

A.   Because her father did not want her to feel too sad.

B.   Because she did not love her grandmother.

C.  Because she was too shy to cry at that time.

D.  The author doesn't give the explanation.

2. It can be inferred from the text that                     .    

A.   there are two ways to keep healthy

B.   emotional health has a close relationship to physical health

C.   crying and laughing play the same roles

D.   crying does more good to health than laughing

3. According to the author, which of the following statements is true?

A.  Crying is the best way to get help from others.

B.   Fighting back tears may cause some health problems.

C.   We will never know our deep feelings unless we cry.

D.   We must cry if we want to reduce pressure

4. What might be the most suitable title for the text? 

A. Why We Cry                

B. How to Keep Healthy

C. Power of Tears              

D. New Scientific Discovery

5. What is the author's attitude to "crying"?

A. Positive.  

B. Negative.    

C. Touched.    

D. Upset.

转致

修复体粘固后患牙长时间持续疼痛，最可能

A．已发展为牙髓炎

B．已发展为根尖周炎

C．存在牙龈炎或牙周炎

D．牙本质过敏

E．已有继发龋，但未发展为牙髓炎

进口许可证和出口许可证，如实行“非一批一证”，应在许可证的备注栏打印“非一批一证”字样，有效期内多次使用，但最多不超过( )次。

A．6

B．8

C．10

D．12