Identify each passage as having either a directly stated main idea or an implied main idea.
Passage 1: A recent report revealed that about
70 percent of American silent films
are lost. With the arrival of talking
films in the 1920s, silent films
became unprofitable. So film studios
threw away most of them. Some films
were saved, but many of them were
later lost in fires caused by the nitrate
in film reels. Several other films were
destroyed when they were recycled for
their metal content.

Passage 2: The planet Jupiter is almost entirely
made of gas and liquid. Although it is
more than 1,000 times larger than
Earth, there is barely any solid surface
to stand on. Jupiter’s atmosphere is
made up of hydrogen and helium. It
does not have much water. Plus, huge,
violent storms move a