(A most)useful tool (for analyzing) the elemental (composition of fossils) is the electron probe, a (modify) electron microscope.
答案是 a most错 但是 我认为是modify错
举报
发表回复
手机版|ChaseDream|GMT+8, 2025-10-4 14:17 京公网安备11010202008513号 京ICP证101109号 京ICP备12012021号
ChaseDream 论坛
© 2003-2025 ChaseDream.com. All Rights Reserved.