题目

假定你是李华，你的新西兰笔友Fred发来邮件询问你是否会选择去国外留学。请你给他回封邮件，内容包括：1）你的选择;2）你的理由;注意：1）词数100左右；2）可以适当增加细节，以使行文连贯。 答案：Dear Fred, I'm writing to tell you whether I will choose to study abroad. Studying abroad actually benefits students much, but personally speaking, I prefer studying at home. One reason is that studying abroad will bring much financial pressure to my parents and more importantly, there are many great universities in China where I can better further my education with satisfactory studying condition复数z1=a+bi（a、b∈R，i为虚数单位），z2=-b+i，且|z1|＜|z2|，则a的取值范围是（　　） A、a＞1B、a＞0C、-l＜a＜1D、a＜-1或a＞1