[解析]
(1)细节理解题。根据第三段的She was happy when she got the draft back,but she didn't like what she saw—15 pages full of pure criticism(当她把草稿拿回来时,她很高兴,但她不喜欢她看到的﹣﹣﹣15页纸都是纯粹的批评)可知,吉尔(Jill)很难过是因为在她申报书上布满了导师的批评意见。故选C。
(2)细节理解题。根据第四段的When he gives feedback,he's direct,which is a cultural thing(当他给出反馈时,他是直接的,这是一种文化)可知,吉尔的导师对实验室成员的问题直言不讳。故选D。
(3)词句猜测题。根据划线单词所在的句子以及前一句The Americans and Germans approached work discussions similarly by using a direct approach.However,things sometimes began to diverge when it came to negative feedback(美国人和德国人以直接的方式进行类似的工作讨论。然而,当涉及到负面反馈时,事情有时会开始出现diverge)可知,划线单词所在的句子意思应与however前的内容相反,所以however后的内容意思为"当涉及到负面反馈时,情况就不一样了",所以该单词的意思为"不同",A.Extend延长;B.Differ不同;C.Improve提高;D.Pause暂停。故选B。
(4)推理判断题。根据第四段的He grew up in Germany,where the cultural standards around criticism are different(他在德国长大,那里的批评文化标准不同)和最后一段的They do it different everywhere,don't they(各地的做法都不一样,不是吗)可知,吉尔最后明白的道理是:文化差异会导致误解。故选A。