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填空。将答案填写在答题卡的相应位置。

Aids is caused by a 1. (dead) virus called HIV, which attacks the body s immune system and there’s no cure for it When someone has Aids, the person loses the ability to fight other illnesses. The virus 2. (spread) in three ways. It can be passed on through 3. (protect) sex, through blood and from a mother to her child. Contrary to 4. many people think, HIV cannot be transmitted through mosquitoes, a cough or sneeze.

Since the disease 5. (burst) on the scene in the 1980s, it has become a serious problem around the world. According to WHO, more than 15 million children have lost their parents 6. Aids. Ajani, whose father died of Aids two years ago, lost his mother for the same reason.

China has also been affected by Aids. By the end of 2009, there were about 740,000 HTV 7. (carry) in China. Dr David Ho, a Chinese-American Aids expert, has devoted himself to 8. (bring) up-to-date technology to China’s Aids problem. UNAIDS also teaches young people how to prevent Aids, and set up treatment centers 9. mothers with HIV can receive medicine to help keep them from passing HIV on to their children.

Ajani and his sister are 10. (fortune). Because their mother had access to prescription Aids medicines when she was pregnant, they did not get HIV from her. Now their grandfather is caring for them.