Earth's surface is not made up of a singlesheet of rock that forms a crust but rather a number of "tectonic plates" that fit closely, like the pieces of a giant jigsaw puzzle.
地球表面并不是由构成地壳的单块岩石构成，而是许多紧密相连的“构造板块”，像一块巨大的拼图。
2
Mark the corresponding letter on Answer Sheet 1 with a single line through the centre.
在答题卡1相应字母中心处划一条线。
3
Please mark the corresponding letter for each item on Answer Sheet 2 with a single line through the centre.