My first time on horseback was embarrassing. I had never been on a horse in my life, but I was afraid to admit it. That's probably where my trouble started. When I lifted my foot to put it into the stirrup,
my friend Sally laughed. "Use the other foot, silly," she said. Blushing beet red. I laughed too. I used
the other foot. Then it took me about 10 minutes to swing up into the saddle. The horse kept moving
and / scampered along on one foot while Sally giggled. Finally mounted, I looked down. I felt as if /
were sitting on a mountain! Fortunately, Sally had chosen a gentle mare for me. I realize now she
wasn't fooled. She knew I didn't know the first thing about riding. She really is a good friend. After a
while, I learned to relax a little. I was actually riding a horse and it was fun. I even learned how to use
the reins to guide the horse to the left and to the right.
1. What is the topic sentence?
2. Why did the narrator of the story state that Sally was a good friend?

In the context of literature, what is the meaning of word choice

Read the excerpt from the code book. without much hope of a theoretical breakthrough, cryptanalysts have been forced to look for a technological innovation. if there is no obvious way to reduce the number of steps required for factoring, then cryptanalysts need a technology that will perform these steps more quickly. silicon chips will continue to get faster as the years pass, doubling in speed roughly every eighteen months, but this is not enough to make a real impact on the speed of factoring—cryptanalysts require a technology that is billions of times faster than current computers. consequently, cryptanalysts are looking toward a radically new form of computer, the quantum computer. if scientists could build a quantum computer, it would be able to perform calculations with such enormous speed that it would make a modern supercomputer look like a broken abacus. the author’s purpose in this paragraph is to convince the readers to pursue a career in analysis. explain the need for faster technology in cryptanalysis. entertain with interesting stories about supercomputers. argue for more money to develop a quantum computer.

Time rema 01: 55: examine the public service ads this first ad is from 1971 which statement best surmanzes the differences between these two ads? get involved now. pollution hurts all of us. they have different sponsors, they have different appeals they have different purposes they have different target audiences, this second ad is from 2013 @ a 69