According to the text, judge the following items.
The word “Through” (l.20) is the same as towards.
In the text,
"altogether" (l.2) is the same as all together.
In the text,
"last" (l.19) is the same as latest.
In the text,
"along with" (l.1) means together with.
In the text,
"availability" (l.5) means difficult to be obtained.
In the text,
threaten" (l.32) is synonymous with menace.
According to the text, it can be deduced that
"enormous" (L.15) is the same as large. 
Based on the text above, judge the following items.
"In fact" (l.16) is the same as As a matter of fact.
Based on the text above, judge the following items.
"source" (l.20) means fountain.
In the text, the expression "drop in the ocean" (l.33-34) means
