A-A+
New and more ______methods have to be found fo
问题详情
New and more ______methods have to be found for collecting earthquake data and analyzing it.
A. up-to-date
B. update
C. up to
D. outdated
参考答案
正确答案：A
[解析] up-to-date固定用法：新近的；现代的；新式的。
考点：
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