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常用代词基础语法知识点
科研论文中常见的代词主要包括it，one，that，从基础的语法知识以及科研论文常用的表达习惯看三者用法类似但略有差异，用作代词时也需结合上下文理解，避免歧义。
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论文中代词使用实例总结
以下例句均选自知名期刊近期刊出的论文
It
Cellulose is a hydrophilic structural material that vastly exists in the cell walls of green plants and shows excellent mechanical property, good biodegradability, and high porosity, making it（指代前文出现过的cellulose） the best candidate for paper and other fabrics.
We dispersed 2.5 w% SiO2 nanoparticles into the ethanol solution, which was treated by ultrasound for 0.5 h to obtain the SiO2 nanoparticles dispersing solution. We stored it（指代前文制备的分散液） at 2-8 °C for further use.
One
The interspecific interactions between native symbiotic species and invasive alien species are one（固定用法one of the -est noun） of the most critical factors in determining the successful colonization of invasive alien species.
The radius measures approximately 80% of the width of the ulna. The metacarpals are unfused with one（泛指中的强调） another or with the proximal carpals.
That
Additionally, we compared the expression of nhr-80 and fat-5 between males and females using qRT-PCR and found that（引导表语从句） the expression level of nhr-80 in male is 0.68 of that（指代前文中出现的the expression level of nhr-80） in females (df = 7, t = 3.0, p < 0.05) and fat-5 in males is 0.46 of that（与前一that类似，指代fat-5的表达水平，表明相同基因在不同性别个体内的表达情况有差异，避免句式冗长） in females (df = 8, t = 7.0, p < 0.0001).
Measuring the TAG content of the two fungi revealed that S. sp. 1 had a TAG content about two times higher than that（指代前文出现过的TAG content） of O. ips (df = 8, t = -6.0, p < 0.0001).
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科研论文代词练习
实际论文写作中代词的用法更加灵活，it、one、that的用法也并不局限于代词，接下来感兴趣的读者可以尝试在具体语句中用it、one、that填空。
To solve this problem, we immerse BC (bacteria-cellulose) hydrogel into ethanol solution with repeated ultrasonic treatment, and then transform _1_ into BC alcogel.
Here we describe _2_ of the stratigraphically youngest and geographically southernmost Jurassic avialans, Fujianvenator prodigiosus gen. et sp. nov., from the Tithonian age of China.
The results of Gaussian fitting on all events indicated _3_ the ΔI1/I0 of GlcNAc was 0.89, _4_ of LacNAc was 0.97, and _5_ of GlcNAc-Lactose was 0.93.
The excellent machining property with only 20 μm thickness makes _6_ convenient for high-precision paper-cutting via the laser-cutting technique.
Seven of the engineered nanopores produced a stable opening current under the same experimental conditions, which is comparable to _7_ of wild type (WT) pores.
Here we create two prototypes through different paper-cutting patterns for the demonstration. The first _8_ is a holey-structured meta-lens for generating high-quality ultrasound hologram.
After comparing these three groups to the electrical fingerprints for each analyte, the event distribution for each glycan type in the scatter plot was also consistent with _9_ when tested individually.
1.it 2.one 3.that 4.that
5.that 6.it 7.that 8.one
9.that
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