Select Topic Sentences

Name (handle):E-mail (optional):

Instructions: Study the following paragraph and the list of topic-sentence choices. Select the sentence that would function the best as the topic sentence for the paragraph. To review, see this discussion of topic sentences (opens in a separate browser window).

Item 1 of 2 items

Topic sentences
This is a topic sentence.
This is another topic sentence.
This is still one more topic sentence.
This is the last topic sentence.
Rest of paragraph
Pluto presents significant challenges for spacecraft because of its small mass and great distance from Earth. Voyager 1 could have visited Pluto, but controllers opted instead for a close flyby of Saturn's moon Titan. Voyager 2 never had a plausible trajectory for reaching Pluto. In 2000, NASA cancelled the Pluto Kuiper Express mission, citing increasing costs and launch vehicle delays. The first spacecraft to visit Pluto will be NASA's New Horizons, launched on January 19, 2006.


Information and programs provided by