Unit1 SectionⅡ Learning About Language&Discovering Useful Structures(练案)-【成才之路】2023-2024学年高中新教材英语选择性必修第二册同步学习指导(人教版2019)

2024-04-01
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Stainless steel lab ware. Never use hydrochloric acid on steel products. A soft and clean cloth can be used. There are also stainless steel pads that can be used. 5.   E  Usually these steel products have visible polishing grains or lines that must be followed as directions for cleaning. Filtered water is the recommended liquid for cleaning. Some unfiltered water can contain deposit built up that can protect the equipment. A. Note that each chemical is unique. B. Note that the cleaner doesn􀆳t have strong PH. C. There are instances in which water is used for the last cleaning. D. It is still best that you check cleaning instructions in the packaging. E. Howeverꎬthe manner of cleaning or polishing must be correctly observed. F. This type of equipment is usually used as a holder for chemicals to be tested. G. You use different science equipment to help you produce conclusions on given problems.  􀪋􀪋􀪋􀪋􀪋􀪋􀪋􀪋􀪋􀪋􀪋􀪋􀪋􀪋􀪋􀪋􀪋􀪋􀪋􀪋􀪋􀪋􀪋􀪋􀪋􀪋􀪋􀪋􀪋􀪋􀪋􀪋􀪋􀪋􀪋􀪋􀪋􀪋􀪋􀪋􀪋􀪋􀪋􀪋􀪋􀪋􀪋􀪋 Ⅲ. 语法填空     阅读下面短文ꎬ在空白处填入 1 个适当的单词或括号内单词的正确形式ꎮ     Astronomy is the oldest science 1.   known  (know) to man. Thousands of years ago man looked at the stars and wondered about the heavens. But man was 2.   limited  ( limit) by the six planets that he could see only 3.   with  his eyes alone. The Greeks studied astronomy over 2ꎬ000 years ago. They could see the size colourꎬand 4.   brightness  ( bright) of a star. They could see its place in the sky. They watched the stars 5.   move  (move )as the seasons changed. But the Greeks had no tools to help themselves study the heavens. Each new tool added to the field of astronomy helped man reach out into space. Man knew a little about the moon 6.   until  there were telescopes. He did not know that the planet called Saturn had 7.   rings       ( ring) around it. His sight was 8.   so  limited that he could not see all the planets. In the early 1700sꎬpeople thought there were only six planets. Before the spectroscopeꎬman did not know wha

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Unit1 SectionⅡ Learning About Language&Discovering Useful Structures(练案)-【成才之路】2023-2024学年高中新教材英语选择性必修第二册同步学习指导(人教版2019)
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Unit1 SectionⅡ Learning About Language&Discovering Useful Structures(练案)-【成才之路】2023-2024学年高中新教材英语选择性必修第二册同步学习指导(人教版2019)
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