题目内容

以下哪一组不是粗面内质网合成的蛋白质种类（）

A. 分泌性蛋白（Secretory proteins）: 如，胰腺细胞分泌的酶、浆细胞分泌的抗体、内分泌细胞分泌多肽类激素，小肠的杯状细胞分泌粘蛋白，肝细胞分泌血清蛋白及胞外基质蛋白成分
B. 细胞器中的可溶性蛋白（Soluble proteins of organelles）: 如，线粒体蛋白，过氧化物体蛋白，叶绿体蛋白，细胞核蛋白
C. 多种膜整合蛋白（Integral membrane proteins）: 如，细胞质膜蛋白、内质网膜蛋白、高尔基体膜蛋白、溶酶体膜蛋白
D. 细胞器中的可溶性蛋白（Soluble proteins of organelles）: 如，溶酶体、液泡蛋白，内质网蛋白，高尔基体蛋白，内体蛋白

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The ancient Chinese Silk Road was not all about China’s exporting silk. The country also mainly imported_____ from other countries along the route（）

A. war horses
B. spices
C. medicinal materials
D. sea food

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According to trade statistics, China’s trade surplus mainly comes from its trade with_____（）

A. The United States
B. The European Union
China’s Taiwan
D. China’s Hong Kong

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As far as primary products are concerned, based on the classifications of SITC, China mainly imports ______ in recent years. Together they make up nearly 90 percent of China’s primary product imports（

A. crude materials, inedible, except fuels
B. mineral fuels, lubricants and related materials
C. animal and vegetable oils, fats and waxes
D. food and live animals

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What is your achivement, according to the text（）

A. The triumph of years of your own hard work
B. The triumph of years of your parents’ hard work
C. The triumph of years of your teachers’ hard work
D. To be a college student

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