3.have power sth.; make it work
4.a simple,flat boat without sides;usually pieces of wood tied together
The sailors got away fron the wrecked ship on a _________
flat raft life raft ocean raft
5.need; have to use
Most plants require sunlight. Students are required to attend classes requirement
6.a thin straight piece of wood or metal
You can fish with a fishing __________.
7.bamboo bamboo shoots
8.make food or drink move down your throat from your mouth
She swallowed some milk
9.take away;take out ant.replace 代替，取代 add v.增加，添加
10.traditional a. a very old ,familar way of doing sth. that is part of your way of life or culture ant. modern a.
Chinese traditonal medicine中医
11.skill n. skillful灵巧的，熟练的
He has great skill in
drawing.
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