【简答题】The old lady dropped her spoon and bent _______, causing her to feel a sharp pain in the back.(pick up)
【判断题】可见光波长 λ大约为400nm—760nm。对于不同波长的光,人们感受到的颜色却是同的。
【单选题】The old lady dropped her spoon and bent to ________ , causing her to feel a sharp pain in the back.
【简答题】v. to hurt with a sharp pain
【判断题】"a sharp pain"是“隐痛”的意思。
【单选题】The old man dropped his spoon and bent to pick it up, ______him to feel a sharp pain in the back.