问题
单项选择题
()属于路面基层粒料类嵌锁型。
A．沥青稳定碎石
B．泥灰结碎石
C．水泥贯入碎石
D．级配碎石
答案
参考答案：B
解析：路面粒料基层分为嵌锁型和级配型，其中嵌锁型包括泥结碎石、泥灰结碎石、填隙碎石；级配型包括级配碎石、级配砾石，符合级配的天然砂砾、部分砾石经轧制掺配而成的级配砾、碎石。
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()属于路面基层粒料类嵌锁型。
A．沥青稳定碎石
B．泥灰结碎石
C．水泥贯入碎石
D．级配碎石
参考答案：B
解析：路面粒料基层分为嵌锁型和级配型，其中嵌锁型包括泥结碎石、泥灰结碎石、填隙碎石；级配型包括级配碎石、级配砾石，符合级配的天然砂砾、部分砾石经轧制掺配而成的级配砾、碎石。
Some people have very good memories（记忆力）and can ___learn quite long poems（诗歌）by heart. __ people have poor memories and can’t remember things ____they have said them over and over again. The famous English writer, Charles Dickens, said that he could walk down any long street in ____ and then tell you the names of all the shops he had __. Many great men of the world have wonderful memories. A good memory is a great help __a language. Everybody learns __ own language by remembering the things he heard when he was a small child. Some children like those who live in foreign countries with their parents, seem to learn two languages as ___ as they do one. In school it is not so easy for pupils to learn a second language because they have very __ time for it. Memory ___a diary that we keep every day.
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