2. 外语
  3. (A most) useful tool (for analyzing) the elemental (composition of fossils) is the electron probe, a (modify) electron microscop

(A most) useful tool (for analyzing) the elemental (composition of fossils) is the electron probe, a (modify) electron microscop

admin2005-01-30  80
问题 (A most) useful tool (for analyzing) the elemental (composition of fossils) is the electron probe, a (modify) electron microscope.
选项 A、A most
B、for analyzing
C、composition of fossils
D、modify
答案D
解析
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