Add the code in section 3.3.5.

Included is the following file:

	3.3.5_Propagation_of_Constraints.scm

Thank you!
							Lawrence X. Amlord
							  Oct 26th, 2013
							  Xi'an, China
Add my answer to Exercise 3.33.

Included is the following file:

	Exercise_3.33.scm

Thank you!
							Lawrence X. Amlord
							  Oct 26th, 2013
							  Xi'an, China
Update my answer to Exercise 3.33.

Modified is the following file:

	Exercise_3.33.scm

Besides, I've added the testing file:

	Test_of_Exercise_3.33.scm

Thank you!
							Lawrence X. Amlord
							  Oct 26th, 2013
							  Xi'an, China
Add my answer to Exercise 3.34.

Included are the following 3 files:

	Exercise_3.34.pdf
	Exercise_3.34.scm
	Exercise_3.34.tm

Thank you!
							Lawrence X. Amlord
							  Oct 26th, 2013
							  Xi'an, China
Add my answer to Exercise 3.35.

Included are the following 2 files:

	Exercise_3.35.scm
	Test_of_Exercise_3.35.scm

Thank you!
							Lawrence X. Amlord
							  Oct 27th, 2013
							  Xi'an, China
Add my answer to Exercise 3.36.

Included are the following 2 files:

	Exercise_3.36.pdf
	Exercise_3.36.tm

Thank you!
							Lawrence X. Amlord
							  Oct 27th, 2013
							  Xi'an, China