2．选D ① versatile 多才多艺的 He is a versatile athlete. ② restless不安定的，焦虑的，烦躁的 Americans are historically a restless and mobile people选项都是副词，但directly还可作连词，等同于as soon as，一……就…….而skilled相对versatile"多才多艺的"l来说,versatile更恰当.这个句子主要强调的是一个农民的多种技能.
3．选D 四个 of a 非常的…….(这个短语很重要一定要把这个例句背起来哦。)
4．选A
5．选A frustrate 挫败，阻挠，使感到灰心.frustrate在郎文词典中第二条是这样解释的.to prevent sb’s plans, efforts or attempts from succeeding挫败,阻挠 Their attempts to speak to him were frustrated by the guards.没特定给人使用哦.