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2.单核细胞的特点是
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血液是一种结缔组织，它的___相当于细胞间质，其中___相当于基质，___相当于纤维。
[Unit 7] Directions: Choose the statement that best summarizes the main idea of Text A in Unit 7 Materials Science.
[Unit 8]Directions: Choose the statement that best summarises the theme of Text A of Unit 8.
[Unit 7] Directions: Please read the following passage in which there are five underlined parts. Determine if the underlined parts are appropriately and academically written. If not, please decide how to improve them by choosing the best answer.As illustrated in Figure 7a, the resistance variation ration linearly increased with the increasing strain under stretching. The device performance was tested at 0-150% strain and cycled for 10 times, 1exhibited the good electrical stability of PAAm/Casein hydrogels (Figure 7b). As depicted in Figure S1, the 2 resulted hydrogel sensor could endure dynamic deformation at 20% strain for 100 cycles without any signal degradation. Moreover, the hydrogel sensor maintained the sensitivity after 3 placed in the air for a period of time. When the 4 applied strain was at 100%, the hydrogel sensors could still immediately respond in the case of water loss. At the same time, this resistance change process of hydrogel could also be identified and recorded by the smartphone (Figure 7c, d), which greatly facilitated the development of real-time 5 monitoring hydrogel wearable devices.
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