题目内容：

阅读下面材料，在空白处填入适当的内容(1个单词)或括号内单词的正确形式.

The U.S. Centers for Disease Control and Prevention recently reported that all regions of the country are experiencing raised levels of flu activity, 1. (indicate) that flu season is here. In fact, the CDC estimates (评估)that there have already been 2.6 million flu illnesses, 1,300 deaths, including 2. (child), from the flu.

This is a reminder of the power of the influenza virus. Americans need to be 3. (full) prepared for the rest of peak season, 4. will continue into next year. There is still plenty of time for people 5. (receive) the annual flu shot.

Due 6. the nature of the vaccine (疫苗).it takes a few weeks to build up immunity (免疫力)and offer full protection. Remember: Flu 7. (regard) as the sixth leading cause of death in the U.S.

Currently. 37 states and Puerto Rico are experiencing widespread or regional flu activity, including New York. California. Maryland and so on. Last flu season, as many as 43 million people were infected with the influenza virus, with 650.000 hospitalized and 61.000 deaths. The previous year, we experienced one of the 8. （bad） seasons in modern history. with nearly 80.000 Americans dying and 49 million infected. You only have to look at the history of this virus io know we have 9. long way to go before the worst of this flu season 10. （be） behind us.