8. Choose the card which you tike best, and fill in the following blanks with both your and your friends names and email addresses.
选一张你喜欢的贺卡，在下面的空白栏中，填入你和你朋友的名字和电邮地址。
youdao
9. A breakthrough was possible when Boyd found that when a dog moves, its head remains relatively still and so performs tike a gyro stabilised platform.
波伊德发现，当一只狗在运动时，它的头部相对稳定，与用陀螺仪固定的平台相仿，这时，突破就成为可能。
youdao
10. A breakthrough was possible when Boyd found that when a dog moves, its head remains relatively still and so performs tike a gyro stabilised platform.
