What is crucial in the development of ‘babies’ brains?

• A、Babies’ ability to focus.

• B、Babies’ mastery of skills.

• C、Babies’ muscle strength

• D、Babies’ near-constant movement.

Writing: For this part, you are supposed to write an e-mail in about 100 - 120 words based on the following situation. Remember to write it clearly.

你(Li Yuan)下周一因為要去參加演講比賽，不能上外教(Prof.Smith)的寫作課。請給他寫一封e-mail，內容包括:

·請假并表示歉意；

·解釋不能上課的原因，如比賽的重要性；

·承諾會自學所缺內容并按時交作業；

·祝他偷快。

28.

• A、which

• B、where

• C、why

• D、how