题目

读“非洲气候类型图”，下列说法正确的是   A．气候类型齐全               B．气候类型基本以赤道为轴，气候带南北对称分布 C．热带雨林气候分布最广    D．没有地中海气候 答案：B 阅读下列短文，从每题所给的（A、B、C和D）四个选项中，选出最佳选项。 　　There are new findings that not enough sleep may causepeople to gain weight．Researchers say a lack of sleep can produce hormonal（激素的）changes that increase feelings of hunger． 　　In one study,researchers in the Unied States examinedinformation on more than 1000 people．The people had taken part in a long term study of sleep disorders． 　　Some people slept less than five hours a night．They had15 percent higher blood levels of a hormone called ghrelin than people who slept eight hours．And they had 15 percent less oFthe hormone leptin．Experts say ghrelin helps make peoplefeel hungry;leptin makes yon feel full． 　　The scientists say these hormona changes may be a cause of obesity（肥胖症）in Western societies．They note the combination that ________ limitation is common ________ and is widely available（可得到的）． 　　The results were not affected by how much people exercised．People who are awake longer have more time to burn energy．But the researehers say loss of sleep may increase hunger especially for high-caloie foods,so people gain weight．It seems that,for survival,the body may be designed to store more fat during times with less sleep． 　　Researchers from Stanford University in California andthe University of Wisconsin did the study．They found thatthe best amount of sleep for weight control is 7.7 hours anight． 　　The Public Library of Science published the findings inits journal Medicine．Internet users can read the full study,free of charge,at plos．org． (1) Which of the following shows the right way in whichlack of sleep causes weight gain? [　　] A． weight;sleep B． sleep;food C． hunger;food D． weight;work (2) The two words missing in the 4th paragraph should be“________”and“________”． [　　] A． weight;sleep B． sleep;food C． hunger;food D． weight;work (3) Which would be a point supported by the reported finding? [　　] A． The more yon sleep,the farther away you are from obesity． B． Those who don't sleep at all are the most likely to put on weight． C． Sleeping contributes more to obesity than eating． D． It's not wise to use sleep hours for exercise． (4) When you sleep 7.7 hours a night,you will ________ [　　] A． have your ghrelin level rise and lepttin level drop B． have your leptin level rise and ghrelin level drop C． have your ghrelin and leptin levels properly balanced D． feel neither hungry nor full (5) The writer wrote this passage to ________ [　　] A． make a news report B． offer a piece of medical advice C． make an advertisement D． keep a record of the research findings