B. Extensive reading: We must train our ability to scan, skip and read fast. Namely, the ability to catch the key words, the topic sentences and the drift of the articles.
泛读：要培养浏览，跳读和快读的能力。即抓住关键词，主题句和中心大意的能力。
2
Minimizing the genetic drift in fertility was key to the purification and reproduction of thermo photo sensitive genic male sterile (TPSGMS) lines of wheat.
最大限度控制育性的遗传漂移，是小麦温光敏核不育系提纯中要解决的主要问题。
3
Then, some key problems are analyzed, such as the tracking method, GPS static drift, cloud terrance camera control and so on. Design scheme is introduced at last.