问题
实验题
如图所示，物体A的长度是 cm。
答案
3.10
题目分析：由图可知，刻度尺的最小分度值是1mm，被测物体的起始刻度值为1.00cm，终至刻度值为4.10cm，所以物体的长度为：3.10cm。
点评：刻度尺读数时要注意分度值、物体与刻度值对齐的位置，并且要估读到分度值的下一位。
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如图所示，物体A的长度是 cm。
3.10
题目分析：由图可知，刻度尺的最小分度值是1mm，被测物体的起始刻度值为1.00cm，终至刻度值为4.10cm，所以物体的长度为：3.10cm。
点评：刻度尺读数时要注意分度值、物体与刻度值对齐的位置，并且要估读到分度值的下一位。
| 阅读理解。 | |
| |
| 1. On Sunday the zoo opens at ______. | |
[ ] | |
| A．10:00 in the morning B．8:00 in the morning C．6:00 in the afternoon D．8:00 in the afternoon | |
| 2. If you are 13, how much do you pay to go into the zoo? | |
[ ] | |
| A．3 dollars. B．6 dollars. C．8 dollars. D．Nothing. | |
| 3. Which of the following statements is true? | |
[ ] | |
| A．The zoo opens longer on Saturday and Sunday than on other days. B．Children under 8 can go into the zoo at any time without paying anything. C．Adults have to pay 17 dollars to go into the zoo. D．You can't take a train to the zoo on weekdays. | |
| 4. If Lucy is 14 and her brother is 7, how much do they pay for the train ride? | |
[ ] | |
| A．2 dollars. B．4 dollars. C．6 dollars. D．8 dollars. |