Read this excerpt from "edward jenner and the history of smallpox and vaccination.” scientific advances during the two centuries since edward jenner performed his first vaccination on james phipps have proved him to be more right than wrong.
which is the author’s central claim in this excerpt?
jenner performed his experiments very long ago in a different kind of world.
there have been important scientific advances in the past two centuries.
jenner’s work is still relevant and important today.
few changes are needed to improve the vaccination.

Read the paragraph many kids do not like to exercise. they do not realize that it is for their own good exercise is good for the body. there are many types of exercise activities to choose from. an activity such as running increases circulation lifting weights builds muscle and strengthens bones playing a sport such as basketball can improve coordination so pick an activity and get your exercisel what is the big picture idea in the paragraph? many kids do not like to exercise exercise is good for the body an activity such as running increases circulation lifting weights builds muscle and strengthens