根据《城市规划编制单位资质管理规定》的规定，城市规划编制单位更名，应当在批准之日起（）日内到发证部门办理《城市规划编制资质证书》变更手续。

A.7

B.15

C.30

D.60

Directions： Complete the passage below with the correct forms of the given words and phrases in the column (ONE is extra).

motivation       Positive        remain          accomplish         guarantee 

Appreciate       go after           however         Apart from         hardship    

When we talk about happiness， we’ll naturally relate it to 　1　 or pleasant emotions. Many people consider happiness to be their ultimate (最终的) goal in life that they will spend their whole lives 　2　. Then how can we achieve happiness？

One effective way is to try to 　3　 in good spirits anytime and anywhere. Contrary to the belief that happiness comes hand in hand with much wealth， money is never enough to 　4　 happiness. What we simply need to do is 　5　 the precious things we have in life， such as good health， family and friends. The secret to obtaining happiness is perfectly explained in the proverb “Happy is he who is content (知足的)” .

　6　 staying optimistic， one can also gain happiness by 　7　 something meaningful. For instance， doing charity work and volunteering to help those in need can give you a sense of happiness as you realize you are doing your part for a better world.

Never quit seeking after happiness because of the fear inside or the 　8　 outside. Everyone has the right to pursue happiness and will surely find it with enough courage and 　9　.