Traffic Jam
a. “volcano” and “explode”. b. “crust” and “hard rock”
c. “magma” and “lava” d. “volcano” and “magma”
3.which is the correct order of the layers of the earth(beginning with the top layer)?
a. crust-hard rock-magma-soft rock
b. crust-hard rock- soft rock-magma
c. magma-soft rock- hard rock-crust
d. volcano-cracks-magma-crust
4.the best title(標題) of the passage should be _____.
a. the volcano b. kilimanjaro volcano
c. the mountains d. the melted rock
key: dcba