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4、[百师联盟]高一2024-2025学年下学期阶段测试卷(四)4历史试题


1、[百师联盟]高一2024-2025学年下学期阶段测试卷(四)4历史试题


A. was famous as. B. was marked as. C. was known as. D. was praised as.
7. Which of the following best describes the impact of the giveaway project
A. Far-reaching. B. One-sided. C. Short-lived. D. Time-wasting.
C
A study from the University of Montreal has found that watching ice hockey (冰球) greatly increases your heart rate. For television-watchers, the increase was an average 75%, while for those watching live it rose by 110%. This is equal, say the researchers, to running for 15 minutes.
Heart rates were highest during overtime and if there were scoring chances.
However, there is other research showing that watching football can stress the heart so much that it causes strokes (中风) and heart attacks. A study of German fans compared heart rates and blood pressure as they watched their country play in the World Cup. Both heart rate and blood pressure were raised when they watched their own team, and stayed higher for hours afterwards.


4、[百师联盟]高一2024-2025学年下学期阶段测试卷(四)4 答案


5、[百师联盟]高一2024-2025学年下学期阶段测试卷(四)4物理答案


1、[百师联盟]高一2024-2025学年下学期阶段测(四)4语文答案


3、[百师联盟]高一2024-2025学年下学期阶段测试卷(四)4英语答案


4、[百师联盟]高一2024-2025学年下学期阶段测试卷(四)4生物学试题


4、[百师联盟]高一2024-2025学年下学期阶段测试卷(四)4生物学答案


环己醇 25.93 160.8 0.968 微溶于水
己二酸 152 330.5 1.36 微溶于水，溶解度随温度变化较大，当溶液温度由28 ℃升至78 ℃时，其溶解度可增大20倍
回答下列问题：
(1)仪器a的名称是__________，冷却水的入口是________(填“m”或“n”)。
(2)三颈烧瓶中KMnO4被还原为MnO2，则该反应的化学方程式是________________________。
(3)制备过程中，出现________________现象时可停止加热。
(4)反应完成后在反应体系中加入NaHSO3的目的是__________________________________________。


√
5
C　[A项，铁粉、铜粉只与Fe3+反应，不能探究Fe2+的还原性；B项，不能探究Fe3+的氧化性；D项，不能探究Fe2+的还原性。]
3．下列试剂不能使Fe2+转化为Fe3+的是(　　)
①氯水　②NaCl溶液　③酸性KMnO4溶液　④H2O2溶液　⑤盐酸　⑥NaNO3溶液
A．①②③ B．①③④
C．②④⑤ D．②⑤⑥


3、[百师联盟]高一2024-2025学年下学期阶段测试卷(四)4化学答案