问题
单项选择题 B型题
属于机体防御细胞是（）
A.血小板有关
B.凝血因子有关
C.红细胞有关
D.中性粒细胞有关
E.血浆白蛋白有关
答案
参考答案：D
解析：2.红细胞的主要功能是运输氧气和二氧化碳。血液中98. 5%的氧气与红细胞中的血红蛋白结合，以氧合血红蛋白的形式存在。
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属于机体防御细胞是（）
A.血小板有关
B.凝血因子有关
C.红细胞有关
D.中性粒细胞有关
E.血浆白蛋白有关
参考答案：D
解析：2.红细胞的主要功能是运输氧气和二氧化碳。血液中98. 5%的氧气与红细胞中的血红蛋白结合，以氧合血红蛋白的形式存在。
Betty and Lingling are talking about the future. “What will our life 1 in the future?” asks Betty. “I don’t know,” says Lingling. “What do you think?” “Well, no one knows, but it’s interesting 2 .” “We will 3 go to school. We 4 our lessons on the Internet. When we have problems(难题), . The teacher will 5 us the answers on the Internet. “Now almost everyone 6 a mobile phone ,but_ 7 twenty years everyone will carry apocket computer.” “A lot of people will live and work under the sea.” “Machines will do lots of 8 _, and so people will have more 9 .” “ We will have some rice, vegetables and fruit for meals every day. We will not get any meat to eat because there will be 10 animals. “ “ Oh , our way of life in the future will change a lot.”
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