5．It feels wonderful ________________(不再依靠补助)．

　　答案　1. As more and more countries　2. By studying sociology　3. when they become wealthy

　　4．pirated products　5. to be no longer dependent on allowance

Ⅳ. 任务型阅读

　　The International Space Station will establish a huge laboratory complex in space，more than four times the size and with almost 60 times the electrical power for experiments. Examples of the types of US research that will be performed aboard the station include：

　　More pure protein crystals may be grown in space than on Earth. Similar experiments have already been conducted on the Space Shuttle. This type of research could lead to the study of possible treatments for cancer，immune system disorders and other diseases.

　　Living cells can be grown in a laboratory environment in space where they are not affected by gravity(引力)．Growing cultures for long periods aboard the station will further advance this research. Such cultures can be used to test new treatments for cancer without risking harm to patients.

The effects of long term exposure to reduced gravity on humans will be studied aboard the station. Studies of these effects may lead to a better understanding of the body systems and similar illnesses on Earth and may provide information useful for future space travels.