On a scale of A to E, where A stands for "very well", B for "well", C for "moderately well", D for "not very well", and E for "not at all", rate how well you have achieved the goals set at the beginning of this unit.

　 A B C D E 1. Talk about the environmental issues.
　 A B C D E 2. Understand the two reading passages.
　 A B C D E 3. Use the new words and expressions.
　 A B C D E 4. Explain the relationship between development and environment protection.
　 A B C D E 5. Practice transalting skills: extension.
　 A B C D E 6. Practice word attack strategies.
　 A B C D E 7. Write letters of invitation.
　 A B C D E 8. Understand the situation of the giant pandas.