第八单元

　　1.常考单词：

　　flight negotiation transport overcome internal external rhythm feasible assumption promote

　　2. 常考词组：

　　effect on 　　 to blame… on 　　 to advantage 　　 now that 　　 out of step 　 to leave … alone

　　3. 常考句子：

　　1） The problem of Jet Lag is one every international traveler comes across at some time. （para.1）

　　2） The effects of rapid travel on the body are actually far more disturbing than we realize. （para.2）

　　3） He later blamed his poor judgement on Jet Lag. （para.3）

　　4） Now that we understand what Jet lag is，we can go some way to overcoming it.（para.4）

　　5） The other belongs in our internal clocks which，left alone，would tie the body to a 25 hour - yes，25 - rhythm.（para.5）

　　6） In time the physiological system will reset itself，but it does take time. （para7）

　　7） One reason for this discrepancy is that different bodily events are controlled by different factors. （para.8）

　　8） It is not feasible to wait four days until the body is used to the new time zone. （para.9）