Awriter is working on an essay about the importance of regular dental check-ups. which sentence below would be the best thesis statement for the essay? a. years of using mouthwash nightly in lieu of brushing led to 15 cavities at my last dental check-up. b. regular dental check-ups not only keep your teeth attractive and healthy, they also serve as an opportunity to detect oral cancer. c. dental visits are important. d. getting a check-up from your dentist is a good first step towards having fresh breath.

i believe the answer is: b. mr. head had a long, tube-like face with a rounded open jaw and a short depressed nose.

this is because in the un-revised sentence it said that mr. heads face was long and tube-like, and he had a rounded open jaw. this is not a very grammatically correct because of how it seems to drag on with the and, replaced with, with, makes it sound more fluent in the description.

the sentence that best describes the tone of the passage from the radio broadcast compared to the passage from the book is b. the radio broadcast has a more surprised tone.

consider the text evidence: in the passage from the book, the description is more matter-of-fact. it is simply describing the things resembling little grey snakes, but there is no urgency in the description. on the other hand, in the passage from the radio broadcast, there is definetely urgency (you can tell from the expression used, "good heavens", which clearly indicates surprise.)