Once germs are inside your body, your immune system tries to protect you. It looks for and destroys germs. Special cells patrol your body. Some of these cells actually eat germs! 1 What is the paragraph mainly about? A how we can protect ourselves from getting sick. B why our immune system cannot kill some germs. C why some people get sick more often than others. D how our immune system works to protect us from germs.

Cancer is a disease that begins as an abnormal human cell which the body cannot control. Cell growth needs to be strictly regulated for the body and its organs to function properly. Cancer cells, however, continue to divide and multiply at their own speed, forming abnormal lumps or tumors. 7 million people currently die from cancer every year. Destroy other healthy tissues and will continue to do so if it is not treated. 1 Which is the best title of the passage? .

Read the passage below and answer the questions. In the darkness of the Arctic night, a helicopter landed on the north coast of Russia. Boerge Ousland and Mike Horn were beginning one of the most amazing expeditions in history. Suddenly, the tent ripped open. It was a polar bear! 1 What is the main idea of the first paragraph? 2 What is not menti.