第十一单元

　　1.常考单词：

　　disorder irrelevant　misleading　irresponsibleeventual　replacepartlyundergosuitableto do research intobe central to　be irrelevant toto aim for

　　2. 常考句子：

　　1） The use of animals has been central to the development of anaesthetics.

　　2） Animal research is irrelevant to our health and it can often produce misleading results.

　　3） People and animals are different in their reactions to drugs and in the way their bodies work.

　　4） It would be completely irresponsible and unethical to use drugs on people that had not been thoroughly tested on animals.

　　5） The eventual aim of computer modeling is to reduce the number of animals used in experiments.

　　6） Many other new techniques are now available that enable more research to be done in the test tube to see if chemicals produce harmful biological effects.

　　7） The number of animals used in laboratory tests has declined over the last 20 years.

　　8） This is partly due to alternatives and partly to the fact that experiments are better designed so fewer need to be used.

　　9） Professor David Morton of the department is involved in animal research and is concerned with reducing animal suffering as much as possible.

　　10） This includes keeping them in more suitable cages.

　　include 后面接动名词作宾语。

　　11） In the US，one experiment in nerve regeneration involves cutting a big nerve in a rat's leg.

　　involve 后面接动名词作宾语。

　　12） When it comes to research into heart disease and its effects on the body，or diseases of the brain for example，we do not have adequate substitutes for the use of animals.

　　When it comes to 当提到 … 的时候