【单选题】We may infer from the third paragraph that ______.
A.
the participants should respond immediately after the plus or minus signs
B.
a plus sign probably means the lack of improvement of the participant
C.
participant with more plus marks has more responses on questionable news
D.
a question mark probably means the text is failed
【单选题】钢的表面热处理主要方法有表面淬火和化学热处理 。
【单选题】The data of the study may not reflect the long-term habits of the participants, thus making the results of the study somewhat questionable.
【单选题】The issue of where the peace talks will be held may seem ______, but to the participants it is very important.
【单选题】下述有关传染性软疣的叙述哪项是不恰当的
D.
典型皮疹为粟粒至黄豆大半球性丘疹,表面有蜡样光泽