单选题Scientists have been struggling to find out the reason behind blushing （脸红）。Why would humans evolve（进化） a 21__________ that puts us at a social disadvantage by 22__________ us to reveal that we have c
单选题There are millions of left-handed.people in the world.A number of them got together in1975 to form an association called Left-handers International.The purpose of the organization is to fight discrimi
单选题Would you please let me finish my words? Don't __________ in the middle of a sentence.
单选题Most students choose “Homestay” accommodation when they study abroad：others select Homestay even if they are not on a study visit.Statistics show that it’s a form of accommodation gaining in popularit
单选题We lost two superstars in 1977.Neither man’s admirers have been able to understand the success of the other one.And this tells us something of the difference between the generations that the two singe
单选题Where do cars get their energy from? For most cars，the answer is petrol.21___________some cars use electricity.These cars have 22 ____请作答此空______motors that get their power from large batteries.In 23
单选题 What enables some people to get big creative breakthroughs while others only get small and non-creative breakdowns, blaming themselves and society? Are some people gifted? Are there other factors 21
单选题Sarah: Hello. Im calling to rent an apartment you advertised.Manager: Yes. What kind of apartment are you interested in?Sarah: I m interested in a one-bedroom apartment. 56__________?Manager
单选题It was sunrise on an August morning when the captain and his crew cast their nets some 50 miles south of Louisiana in the Gulf of Mexico. As the net was pulled over, the contents were poured out follo
单选题There are __________ fewer custom tailors and dressmakers in the U. S. than in European countries.
单选题Couples are restricting the size of their families in the UK because of cash worries brought on bvthe financial crisis and the subsequent decline.We’re now up to nearly 3.7 million families whelthere
单选题These are the pictures of the hotel __________ we held our annual meetings.
单选题Coconut椰子is an unusual food for many reasons.It is one of the largest edible seeds produced by any plant.Its unusual contents also make it unique in the seed world—it consists of both “meat“ and “wate
单选题The Nobel Prizes are awards that are given each year for special things that people or groups ofpeople have achieved. They are awarded in six 21__________ : physics, chemistry, medicine, literature,pe
单选题 What enables some people to get big creative breakthroughs while others only get small and non-creative breakdowns, blaming themselves and society? Are some people gifted? Are there other factors 21
单选题Physical activity through sports can enhance your child’s physical health.Sports can also have a positive effect on his mental health.Sports participation helps children ____21____life skills such as
单选题After taking a six-week，fully paid maternity leave（产假）earlier this year，Francine Gemperle was anxious to resume her job but reluctant to be away from her baby daughter，Veronica.Fortunately，she didn’t
单选题I’m sorry about the misunderstanding.You__________ apologize，it wasn’t your fault.
单选题Where do cars get their energy from? For most cars，the answer is petrol.21___________some cars use electricity.These cars have 22 __________motors that get their power from large batteries.In 23 ，ther
单选题About 79 million Americans have pre-diabetes（糖尿病前期）。That means they have blood sugarthats higher than normal but not high enough to be diagnosed（诊断）with type 2-at least not yet.One long-term stud