【判断题】一串红是宿根花卉,美人蕉是球根花卉。()
【简答题】Think of 3 topics for your informative speech based on the criteria discussed in the mini-lecture, and yze why they make good topics for your informative speech.
【单选题】可吸入颗粒物是指大气中粒径为多少的颗粒物
【单选题】—— Do you think you can repair this machine without help? —— _________. This is not the first time for me to do so.
【简答题】摄影构图中常见的对比方法有哪些,请至少列举三种。