求解释下这几道新GRE题

1. Gluten---a protein found in wheat, barley, and rye--- was formerly avoided only by those suffering from celiac disease but has recently become a popular dietary ______, with gluten-free food popping up everywhere.

A. fad    B. substitute C. panacea  D. scam  E. villain

2. The flood of new candidates, including newcomers, party veterans, and the first female candidate, is a startling (i)_____ Japan's (ii)_____ political succession. The crowded field means that the selection of the new prime minister, instead of being customary(iii)_____, backroom affair, has become a source of intense public excitement.

A. abbreviation of        D. scripted        G. conspicuous
B. illustration of            E. chaotic          H. celebrated
C. departure from         F. prolonged     I. dry

3. Arguments based on mere possibilities (i)______ the difficulty of discussing future technology, not least since they (ii)______ public debates on technological options. A mere possibility argument such as "Agricultural biotechnology can have serious effects on ecosystems that we still know nothing about" can be taken by opponents of the technology to be (iii)_____, whereas proponents tend to dismiss it completely.

A. epitomize              D. polarize              G. decisive
B. mitigate                 E. forestall               H. empirical
C. outweigh               F. undergird            I. dogmatic

单空题看了答案才知道错哪了，三空题还是不会，会做的麻烦解析一下思路。

楼主把答案也放上来吧。

补充内容 (2020-11-14 07:12):
别人确定自己答得对才好向你介绍嘛。

1. A; 'recently become a popular dietary dietary fad', 饮食新时尚
2. CDI; 与枯燥(dry)的旧习背道而驰(departure from)
3. ADI; 这个我不太确定... 不过大意是这是个标志性(epitomize)的问题 因为两极分化(polarize)很严重 这些 possibility argument 被 opponents of the technology 奉为自己的真理(dogma)
其实我觉得第三题最后一个空填啥都行....

不好意思，之前我忘了放答案。
1.E   2.CDI   3. ADG

随遇而安123 发表于 2020-11-14 08:20
不好意思，之前我忘了放答案。
1.E   2.CDI   3. ADG

啊啊啊啊啊啊看到答案后反映过来了

1. 'gluten-free food popping up everywhere' 对应的是 gluten = bad, we don't want gluten, 五个答案中 E 是最合适的。gluten 就是个反派。Not D because not swindling anyone.