<?xml version="1.0"?>
<!DOCTYPE BATCH SYSTEM "exercises_oup.dtd"><batch>
<exercise subhead="dragdrop"/>
<media type="none"/><head><title>Sentence Match</title><task>Type in the word missing from the sentences.</task></head>
<body findword="radiation">
<item><text>fluctuations in the cosmic microwave background _________</text></item>
<item><text>Patients receive high doses of _________ during cancer treatment.</text></item>
<item><text>The ozone layer absorbs solar _________.</text></item>
<item><text>Ozone protects the Earth from harmful ultraviolet _________.</text></item>
<item><text>Nuclear testing has exposed millions of people to _________.</text></item>
</body>
</batch>

