下列哪种呼吸系统的显像方法不能获得有关通气方面的信息（） A.81mKr吸入 B.1

一个正方体的表面积为48平方厘米，如果把它一刀切成两个长方体，这两个长方体的表面积的和是（    ）平方厘米。

阅读理解。

     Life comes in a package. This package includes happiness and sorrow, failure and success,

hope and despair. Life is a learning process. Experiences in life teach us new lessons and make

us a better person. With each passing day we learn to handle various situations.

                                                       Love

     Love plays a pivotal role on out life. Love makes you feel wanted. Without love a person

could go Hayward(不归路) and also become cruel and ferocious. In the early stage of our life,

our parents are the ones who show us with unconditional love and care, they teach us about

what is right and wrong, good and bad. But we always tend to take this for granted. It is only

after marriage and having kids that a person understands and becomes sensitive to others feelings.

Kids make a person responsible and mature and help us to understand life better.

                                         Happiness and Sorrow

     Materialistic happiness is short-lived, but happiness achieved by bringing a smile on others

face gives a certain level of fulfillment. Peace of mind is the main link to happiness. No mind is

happy without peace. We realize the true worth of happiness when we are in sorrow. Sorrow

is basically due to death of a loved one, failure and despair. But these things are temporary and

pass away.

                                            Failure and Success

     Failure is the path to success. It helps us to touch the sky, teaches us to survive and shows us

a specific way. Success brings in money, fame, pride and self-respect. Here it becomes very

important to keep our head on our shoulder he only way to show our gratitude to God for

bestowing success on us is by being humble, modest, courteous and respectful to the less

fortunate ones.

                                            Hope and Despair

     Hope is what keeps life going. Parents always hope their children will do well. Hope makes

us dream. Hope builds in patience. Life teaches us not to despair even in the darkest hour,

because after every night there is a day. Nothing remains the same we have only one choice

keep moving on in life and be hopeful.

     Life teaches us not to regret over yesterday, for it has passed and is beyond our control.

Tomorrow is unknown, for it could either be bright or dull. So the only alternative is work hard

today, so that we will enjoy a better tomorrow.

1.In the passage, the author compares life to          .

A. joy and sorrow

B. package

C. failure and success

D. hope and despair

2.In which section can readers probably read the passage?

A. Opinions

B. Politics

C. Lifestyles

D. Education

3.How is the passage organized?

A. In order of rules.

B. In order of frequency.

C. In order of importance.

D. By making comparison.

4.What's the general meaning of the last sentence of the whole passage?

A. when choosing between "today" and "tomorrow", you'd better enjoy tomorrow better.

B. If you work hard, you'll have a better life in the future.

C. What you only can choose is to work hard today rather than tomorrow.

D. Enjoying a better tomorrow is your only choice.

5.What's the purpose of the passage?

A. To encourage people to love each other.

B. o tell people how to deal with happiness and sorrow.

C. o give readers some information about life.

D. To remind people of keeping having a beautiful dream.

商业银行的管理是对其开展的各种业务活动的( )。

A．组织和控制

B．计划与组织

C．控制与监督

D．调整和监督

患者王某，A1缺失，A2B1做基牙，采用PFM全冠桥修复。

某技师在堆塑瓷粉时，为了体现自然的瓷层颜色、层次和牙冠外形，其牙本质瓷堆塑的尺寸回切前与正常天然牙冠的关系是

A．牙本质瓷的尺寸是正常天然牙冠的1/3

B．牙本质瓷的尺寸是正常天然牙冠的1/2

C．牙本质瓷的尺寸与正常天然牙冠相同

D．牙本质瓷的尺寸为正常天然牙冠的1.5倍

E．牙本质瓷的尺寸为正常天然牙冠的2倍

F．牙本质瓷的尺寸为正常天然牙冠的2.5倍

G．牙本质瓷的尺寸为正常天然牙冠的3倍