小学数学四则运算速度与accuracy 测评2025 年试卷及答案 一、单项选择题（共10 题，每题2 分） 1. 计算：15 + 7 = ? A. 22 B. 23 C. 21 D. 20 2. 计算：24 - 9 = ? A. 15 B. 16 C. 14 D. 13 3. 计算：6 × 8 = ? A. 48 B. 56 C. 64 D. 42 4. 计算：36

2025 二年级数学下册万以内数的计算accuracy 试卷及答案 一、单项选择题（每题2 分，共10 题） 1. 一个数由5 个千和5 个一组成，这个数是（）。 A. 5005 B. 5050 C. 5500 D. 5001 2. 比最大的三位数多1 的数是（）。 A. 999 B. 1000 C. 1001 D. 10000 3. 计算2400

Agency. Users can also find shared bikes more accurately thanks to Beidou’s global positioning accuracy (精确) of 2.34 meters. Beidou adopts a unique two-way communication system, including its ability It has a positioning accuracy of under 10 meters. This summer, people along the Yangtze River used Beidou-based device to monitor (监测) floodwaters in real-time with an accuracy of just a few centimeters C. To show how the BDS makes people’s daily lives easier. D. To emphasize the high positioning accuracy of the BDS. 35. What is the function of Beidou’s two-way communication system? A. To collect ideas

that the event was successful." 34. Bias undermines objectivity; neutral language ensures factual accuracy and professionalism, maintaining reader trust.

author’s intent. 33. Reread the entire passage with answers filled; ensure logical flow, grammatical accuracy, and consistency in tense/narrative. 34. E.g., "He wanted to go out, ______ it was raining." The

light and wind can be adjusted（调节）67 (automatic) with temperature controlled accuracy of 0.5° and micro-manipulation accuracy of five micrometers. ℃ After using glove boxes 68 (collect) the samples, astronauts

have 90 percent reading accuracy after the first year. However, students even after years of learning English are still far below Italian or Finnish students in reading accuracy. English started as a have 90 percent reading accuracy after the first year. However, students even after years of learning English are still far below Italian or Finnish students in reading accuracy. (像意大利语或芬兰语这样的语言更容易拼写，因为字

that apply) A. Using symbols and abbreviations for speed B. Writing in full sentences to ensure accuracy C. Organizing notes by topic or section D. Not taking any notes to avoid distraction 6. When

in a contemporary, eco-conscious style suitable for modern celebrations. 33. It ensures respect, accuracy, and authenticity. Experts/artisans understand the cultural significance, history, and proper

those in the database, with a combination of audio and video information increasing the recognition accuracy. The reserve’s employees have also added tracking functions in the monitoring system by placing is a problem with bird-monitoring in the reserve? A. Vast area. B. Lack of experts. C. Lack of accuracy. D. Various species. 33. What is the intelligent monitoring system able to do? A. Monitor the watchers