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题目内容双击单词支持查询和收藏哦～
The (i)______ current-generation solar cells are (ii)______: although experimental cells have reached efficiencies greater than 40 percent, most commercially available cells in the early part of the twenty-first century still struggle to get past about 20 percent.
- Blank(i)
- attractions of
- limitations of
- improvements in
- Blank(ii)
- clear
- unmatched
- misunderstood
limitations of , clear 显示答案
以上解析由 考满分老师提供。
