1.【2019·江苏卷·单项填空】28.Unlike traditional gyms, app-backed gyms offer people ___________ options to exercise.
A. casual B. regular C. flexible D. tight
【答案】C
【解析】考查形容词辨析。句意：不像传统的体育锻炼，有app软件的体育锻炼提供了灵活的锻炼选项。A. casual偶然的，随便的；B. regular定期的，有规律的；C. flexible灵活的；D. tight紧的，密封的。故选C。
2.【2019·新课标I卷·语法填空】It is difficult to figure out a global population of polar bears as much of the range has been ___62___ (poor) studied; however, biologists calculate that there are about 20,000-25,000 polar bears worldwide.
【答案】poorly
【解析】考查副词用法。根据句意和结构分析可知，此处用副词poorly修饰谓语动词has been studied，意为“研究很少”。故填poorly。
