女，13岁。正畸需要减数拔牙，术中误将左下尖牙认为第一前磨牙拔除进行上述处理，应满足

Liyang _______ more beautiful if we _______ it clean.     [ ]

A. is; keep      

B. will be; will keep    

C. is; are keeping  

D. will be; keep

改错题。

     I am always interesting in traveling. My reasons are quite simple and clearly. If

anybody is not satisfied with my opinion, I'll greatly surprised at his ways of thinking.

First of all, traveling increased our knowledge.Only by traveling can we see thing

outside our hometown. In the second place, traveling is good to our health.While we

are traveling, we can breath in fresh air, taking exercises and strengthen our bodies as

well. In a word, I sincerely hope everybody that can catch the chance of traveling and

have good luck.

__________________________________________________________________

关于投资组合保险策略，下列说法中正确的有( )。

A．假定投资者的风险承受能力将随着投资组合价值的提高而上升

B．假定资产的收益情况和投资者偏好没有大的改变

C．投资组合保险策略要求的市场流动性小

D．当投资组合价值因风险资产收益率的提高而上升时，风险资产的投资比例也随之提高

发电柴油机的滑油被氧化变质，粘度增加超过原有粘度值的（）时应换新滑油。

A.10%

B.20%

C.12%

D.15%

房地产投资者应缴纳的财产税是( )。

A．经营税金及附加
B．城镇土地使用税
C．房产税
D．企业所得税