【单选题】Est-ce que je peux t’écrire? —Oui,____.
【简答题】Where do most of the Chinese people live in San Francisco? [A] In Chinatown. [B] In the northern part of the city. [C] All over the city. [D] In Japan town.
【单选题】与市场上占据支配地位的企业进行正面竞争的定位方式是指()。
【判断题】绝大部分增塑剂都含有 1-3 个酯基,一般随着酯基数目的增多,相容性、透明性都更好。