单项选择题

(句子释义)If such work is hundreds or thousands of years old and is still admired, there is probably something to it.（）
A.…there is a good reason for people to love it.
B.…there is something people failed to discover.
C.…you can be sure that it is well-written.
D.…you can conclude that it must be popular.

A.（）
A.…there
B.
B.…there
C.
C.…you
D.
D.…you
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单项选择题
(句子释义)My mother reached into her bottomless supply of maxims and told Doris,“An apple a day keeps the doctor away.”（）A.My mother took out a book, which provides a large number of maxims.B.My mother began quoting a wise saying from her unlimited collection.C.My mother always had a book of quotations within easy reach.D.My mother was constantly supplied with sayings and quotations.
A.”（）
A.My
B.
B.My
C.
C.My
D.
D.My
单项选择题
在测定水泥的安定性试验中，下列试验步骤正确的是( )。①脱去玻璃板，取下试件，先测量雷氏夹指针尖端的距离，精确到0.5mm，接着将试件放到沸煮箱内水中试件架上，指针朝上，然后在(30±5)min内加热至沸并恒沸(180+5)min。②沸煮结束后，立即放掉沸煮箱里的热水，打开箱盖，待箱体冷却至室温，取出试件进行辨别。③将预先准备好的雷氏夹放在已稍擦油的玻璃板上，并立即将已制好的标准稠度的水泥净浆一次装满雷氏夹，装浆时一只手轻扶雷氏夹，另一只手用宽约10mm的小刀插捣数次，然后抹平，盖上涂油的玻璃板。随即将试件移至湿气养护箱内养护(24+2)h。④每个试样需成型两个试件，每个雷氏夹应配备质量为75～85g的玻璃板两块。一垫一盖，凡与水泥净浆接触的玻璃板和雷氏夹内表面都要稍稍地涂上一层油。③④①②④③①②②④③①①④③②
A.5mm，接着将试件放到沸煮箱内水中试件架上，指针朝上，然后在(30±5)min内加热至沸并恒沸(180+5)min。
②沸煮结束后，立即放掉沸煮箱里的热水，打开箱盖，待箱体冷却至室温，取出试件进行辨别。
③将预先准备好的雷氏夹放在已稍擦油的玻璃板上，并立即将已制好的标准稠度的水泥净浆一次装满雷氏夹，装浆时一只手轻扶雷氏夹，另一只手用宽约10mm的小刀插捣数次，然后抹平，盖上涂油的玻璃板。随即将试件移至湿气养护箱内养护(24+2)h。
④每个试样需成型两个试件，每个雷氏夹应配备质量为75～85g的玻璃板两块。一垫一盖，凡与水泥净浆接触的玻璃板和雷氏夹内表面都要稍稍地涂上一层油。
③④①②
④③①②
②④③①
①④③②
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