问题
多项选择题
符号的含义有以下哪几种？（）
A.书面义
B.指示义
C.内含义
D.口头义
E.背景义
答案
参考答案：B, C, E
搜题请搜索小程序“爱下问搜题”
符号的含义有以下哪几种？（）
A.书面义
B.指示义
C.内含义
D.口头义
E.背景义
参考答案：B, C, E
善于梳理化学知识，能使你头脑更聪明．以下完全正确的一组是（ ）
| ① | 物质的性质与用途 | ② | 安全常识 |
| N2性质稳定--填充食品袋防腐 O2支持燃料--可作火箭燃料 石墨很软--可作电极 | 煤气泄漏--打120报警 煤矿爆炸--由瓦斯引起 假盐中毒--由NaNO2引起 | ||
| ③ | 日常生活经验 | ④ | 元素与人体健康 |
| 除去餐具上的油渍-用洗涤剂清洗 鉴别羊毛、涤纶-点燃嗅闻气味 使煤燃烧更旺--把煤做成蜂窝状 | 缺碘-易甲状腺肿大 缺维生素C-易引起贫血 缺钙-易骨质疏松或得佝偻病 |
A．①
B．②
C．③
D．④
Valentine’s Day may come from the ancient Roman feast of Lupercalia. 36 the fierce wolves roamed nearby, the old Romans called 37 the god Lupercus to help them. A festival in his 38 was held on February 15th. On the eve of the festival the 39 of the girls were written on 40 of paper and placed in jars. Each young man 41 a slip. The girl whose name was 42 was to be his sweetheart for the year. Legend 43 it that the holiday became Valentine’s Day 44 a Roman bishop named Valentine. Emperor Claudius II 45 the Roman soldiers NOT to marry or become engaged. Claudius felt married soldiers would 46 stay home than fight. When Valentine 47 the Emperor and secretly married the young couples, he was put to death on February 14th, the 48 of Lupercalia. After his death, Valentine became a 49 . Christian bishop moved the holiday from the 15th to the 14th—Valentine’s Day. Now the holiday honors Valentine 50 of Lupercus. Valentine’s Day has become a major 51 of love and romance in the modern world. The ancient god Cupid and his 52 into a lover’s heart may still be used to 53 falling in love or being in love. But we also use cards and gifts, such as flowers or jewelry, to do this. 54 to give flower to a wife or sweetheart on Valentine’s Day can sometimes be as 55 as forgetting a birthday or a wedding anniversary.
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