内容正文:
易错点纠错练19 语法填空易错练
名校语法填空科技发明与科普知识易错题通关练
1.(2024·湖南衡阳·高三衡阳市八中校考期末)
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Using a three-dimensional (3-D) transmission electron microscopy technique, a group of Chinese scientists have discovered a new phenomenon in the deformation (变形) of nanometals, which will help improve material design and engineering applications.
Huang Xiaoxu, a world-renowned scientist in the field of materials science, 1 (lead) a team at the College of Materials Science and Engineering of Chongqing University and its cooperators, created the world’s first 3-D microscopy technique system 2 tracked the rotations of individual grains in a nanograined nickel before and after in situ nanomechanical testing. The testing enables the observation of how the materials respond to applied stress in 3 (they) native state, which is fundamental to understand their mechanical 4 (property), said the research.
They found that the nanosized grains sometimes experience lattice rotations different from the 5 (theory) prediction. This unexpected lattice rotation occurs more often in the larger grains and is due to a phenomenon 6 (call) back stress, which generates the rotation.
Huang Xiaoxu’s team 7 (develop) 3-D microscopy techniques over the past 10 years. The microscopy is equipped 8 self-developed controlling hardware and software to enhance the efficiency of image collection and processing.
“In the past, with conventional microscopy, scientists could only observe the material deformation in a two-dimensional way, 9 often led to incomplete or even misleading results,” said Huang. “Now we can 10 (eventual) observe the deformation in 3-D, and our first finding using the technique.”
2.(2024·湖北十堰·高三统考期末)
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Radio waves carry signals not only between our electronic devices, but also across 11 universe. Electromagnetic radiation (电磁辐射) includes visible light, X-rays