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【简答题】
长期使用的热水壶底部有一层水垢，水垢的主要成分是碳酸钙和氢氧化镁。为测定水垢中碳酸钙的含量，将足量质量分数为10．0％的盐酸加到10．0 g水垢中，产生CO 2 气体的情况如图所示。 （1）水垢中碳酸钙的质量分数是多少? （2）假设水垢中除碳酸钙和氢氧化镁外，不含其它杂质，溶解10．0 g水垢，至少需要质量分数为10．0％的盐酸的质量是 。（结果保留一位小数）
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【简答题】Vocabulary: Direction: Complete each sentence with the words below. ( 2x10=20 points, 20% ) situation medicine respect conference involve supervisor investment attract survey pressure ...
【单选题】What does the word 'coaster' mean in the passage?
A.
A disk or plate placed under a drinking glass to protect a table top.
B.
A vessel engaged in coastal trade.
C.
A roller coaster.
D.
A resident of a coastal area.
【简答题】What does drinking too much lead to?
【简答题】青年李某，右下腹疼痛难忍，到医院就诊。经医师检查，检验，当即诊断为急性阑尾炎，遂对其施行阑尾切除术。手术情况正常，但拆线时发现伤口愈合欠佳，有淡黄色液体渗出。手术医师告知，此系缝合切口的羊肠线不为李某人体组织吸收所致，在临床中少见。经过近1个月的继续治疗，李某获得痊愈。根据《医疗事故处理条例》规定，李某被拖延近1个月后才得以痊愈这一客观后果，应当属于（ ）。
【简答题】A _____________ recent showed 75% of those questioned were in favour of the plan. 最近的民意调查显示,有 75% 的调查对象支持这项计划
【单选题】My figuring was wrong because I______one tiny point.
A.
represented
B.
overlooked
C.
learned
D.
noticed
【单选题】What does the speaker say about alcohol drinking?
A.
It may help patients fall asleep.
B.
It may lead to mental problems.
C.
It may cause serious harm to one's liver.
D.
It may increase the effect of certain drugs.
【简答题】A recent showed 75% of those questioned were in favor of the plan.
【单选题】What does the man suggest?
A.
Buying a new kind of coffee.
B.
Drinking some tea.
C.
Giving up drinking coffee.
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