英语四级新试题4.doc

英语四级新试题4 Part I Writing (30 minutes) Directions: For this part, you are allowed 30 minutes to write a letter to the president of your university. You should write at least 120 words based on the outline given below in Chinese: (注意：此部分试题在答题卡1上。） 假设朋友Gary邀请你参加一个聚会，但你因故不能参加，写信向他说明原因，并祝聚会成功。 PartⅡ Reading Comprehension (Skimming and Scanning) (15 minutes) （注意：此部分试题请在答题卡1上作答；8-10题在答题卡1上。） SURVIVING IN SPACE 1. Everyone who travels in space suffers from feelings of motion sickness initially. [A][Y] [B][N] [C][NG] 2. Astronauts are likely to increase in height while in space. [A][Y] [B][N] [C][NG] Motion sickness troubles more than two-thirds of all astronauts upon teaching orbit, even veteran test pilots who have never been airsick. Though everyone recovers after a few days in space, body systems continue to change. Deprived(丧失) of gravity information, a confused brain creates visual illusions. Body fluids surge to chest and head. The heart enlarges slightly, as do other organs. Sensing too much fluid, the body begins to discharge it, including calcium, electrolytes (电 解液) and blood plasma (血浆). The production of red blood cells decreases, rendering astronauts slightly anemic (贫血的). With the loss of fluid, legs shrink. Spinal (脊骨的） discs expand, and so does the astronaut -who may gain five centimeters and suffer backache. Though the process may sound terrible, astronauts adjust to it, come to enjoy it and seem no worse for wear -at least for short missions such as space shuttle flights that last a week or two. 3. Its important for astronauts to exercise in order to keep their muscles fit. [A][Y] [B][N] [C][NG] During longer flights, however, physiology enters an unknown realm. As director of Russias Institute for Biomedical Problems from 1968 to 1988, Oleg Gazenko watched cosmonauts return from long flights unable to stand without fainting, needing to be carried from the spacecraft. We are creatures of the Earth, Gazenko told me. These changes are the