专题02 选词填空 -学易金卷：2023年高考英语二模试题分项汇编 （上海专用）

专题02：选词填空-2023年高考英语二模试题分项汇编（解析版） （2023·上海静安·统考二模）Directions: Fill in each blank with a proper word chosen from the box. Each word can only be used once. Note that there is one word more than you need. A． disadvantage B．notably   C． energetic  D．insufficient  E. alternateF. evolved   G. contribution   H. periodic  I. withdrawal  J. coexist   K. adjusted The degree to which seasonal changes affect mood, energy, sleep, appetite, food preference, or the wish to socialize with other people has been called seasonality. Seasonal affective disorder (SAD), a condition where depressions in fall and winter ____1____ with non-depression periods in spring and summer, is the most marked form of seasonality.The typical symptoms of ____2____ winter depression include lowered mood, social ____3____, increased appetite and weight gain. Mild or no symptoms often occur in spring and summer. It is argued that such pattern of depression occurrence forms an adaptive mechanism which enhances the likelihood of reproductive success, most ____4____ for females, among populations living at temperate latitudes(纬度). Women are more likely to become pregnant in the summer and thus to give birth at a time of year when their babies have a higher chance of survival. Low chance of summer depression also indicates ____5____ individuals and promotes healthier pregnancies, which increase the survival chances of both mothers and babies. In the modern era, it is probable that repeated winter depression is becoming a reproductive ____6____. Several lines of evidence also suggest that genetic factors play an important role in the seasonality and SAD．Millions of years of evolution had ____7____ human biochemical systems for survival under equatorial(赤道的) environmental conditions. Modern humans began to move out of Africa only about 150,000 years ago. Little change in our ‘equatorial’systems might have been expected over this relatively short evolutionary span. And a genetic defenselessness against seasonal