1. Passage TwentyAll friendships require a certain amount of chemistry.But when two people of the opposite sex become friends， sometimes those friendly feelings can start to resemble something more like sexual tension.Male-female friendships can be an emotional minefield of hidden desires.Does this mean you secretly want to jump into bed with all of your friends? Of course not.But do you ever wonder how many of them might be interested if the opportunity presented itself? Maybe you and your platonic (柏拉图式的)friendship are just a bad breakup and a bottle of wine away from crossing that boundary and hooking up (结合).So can two people of the opposite sex ever really be “just friends?” The Hollywood answer to this age-old question is a decisive HELL NO.On screen， male-female friendships always turn into something more.Harry and Sally， Chandler and Monica， Jim and Pam…… Do I need to go on? Even the characters in Just Friends wind up becoming much more than the film’s definitive title suggests.Cinematic stories dictate that when reasonably attractive men and women befriend one another， they are always on the road to romance， whether they realize it or not.But how much truth is there to this friendship as foreplay theory? It is not a whole lot.Real life isn’t a romantic comedy.Men and women go to school together， work together and hang out in plenty of platonic settings without falling hopelessly in love with one another.Last year， a close female friend of mine moved in with a new male roommate.My immediate reaction was， “You two are definitely going to sleep together.” It seemed to me that a single man and woman living under the same roof would inevitably end up doing it.Much to my surprise， the roommate romance never happened.Almost one year later， the two of them have never even come close to seeing each other naked.Instead， their way of life has come to resemble a sexless marriage.They cook for each other， argue over domestic chores and insist that they never， ever think about each other “that way.”The author believes that two people of the same sex can ().

31. Questions 31 to 35 are based on the following passage.To write his 2010 book， The 5-Factor World Diet， nutritionist Harley Pasternak traveled to the healthiest countries around the world to learn more about what made their meals extra nourishing.He noted that Japanese people ate a wonderful variety of seaweeds， and that Chinese people tried to include at least five different colors in every meal.Pasternak also came away with some valuable observations about how different the North American way of life was， compared with many other countries.For starters， Americans eat much bigger portions than people in other countries.“We don’t prioritize eating seasonally or locally， and we also add lots of salt， sugar and thickening agents to our foods，” explained Pasternak.Contrast that to the healthy Mediterranean， Nordic and Okinawan diets listed in Pasternak＇s book.They all seem to stick to the ethos (特质)of regional， seasonal produce.For example， a traditional Mediterranean diet includes fruits， vegetables， whole grains， nuts and olive oil as the main components of nutritional intake.Fish， chicken and red wine make moderate appearances， while red meat， salt and sugar are used much less often.The benefits of a traditional Mediterranean diet have been studied since the 1970s， and researchers have found that living that olive oil life can help people lose weight， lower their heart disease risk and reverse diabetes.Most other healthy eating cultures also make meals an event—say， multiple courses around the family table， or a glass or two of red wine at a long lunch—opposed to hastily wolfing down handfuls of cereal above the kitchen sink and calling it dinner.Each of the healthy eating cultures has its own unique feature.But Pasternak did take note of one unifying factor in all of the healthy societies he observed.“The only overlapping feature in most of these healthy countries is that they all walk way more than the average American，” said Pasternak.“So really， regardless of what you’re eating， if someone’s walking four miles more than you each day， they are going to be a lot thinner and live a lot longer than you.”What characterizes Japanese and Chinese foods?

20.Some women ()a good salary in a job instead of staying home， but they decided not to work for the sake of the family.

19.A lot of ants are always invading my kitchen.They are a thorough ().

18.()in this way， the situation doesn＇t seem so disappointing.

17.The computer revolution may well change society as ()as did the Industrial Revolution.

16.We take our skin for granted until it is burned ()repair.

15.She cooked the meat for a long time so as to make it ()enough to eat.

14.It is essential that these application forms ()back as early as possible.

13.I＇d ()his reputation with other farmers and business people in the community， and then make a decision about whether or not to approve a loan.

12.In Britain people ()four million tons of potatoes every year.