before的用法

21.— ______ I use your dictionary?—Of course.But please return it to me before you leave.A.Must B.Need C.May22.There is______ wrong with my back and it hurts seriously.A.anything B

三、完形填空(本大题共10小题,每小题1分,共10分)阅读下面短文,掌握其大意,然后从各题所给的A、B、C、D四个选项中选出最佳选项。My name is Damian Costa. I was born in a small village in Italy in 1952. I spent the first few years of my life there before my famil

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It\'s quite remarkable how different genres of music can spark unique feelings, emotions, and memories. Studies have shown that music can reduce stress and anxiety before surgeries and we are all attracted toward our own unique life soundtrack.If you\' r

Passage OneQuestions 46 to 50 are based on the following passage.How can one person enjoy good health, while another person looks old before her time? Humans have been asking this question for thousands of years, and recently, it\'s becoming clearer and

Passage TwoQuestions 51 to 55 are based on the following passage.If there\'s one rule that most parents cling to in the confusing,fast-changing world of kids and media,it\'s “No screens before age 2.”As of today,that rule has been thrown out the window

Passage OneQuestions 46 to 50 are based on the following passage.The trend toward rationality and enlightenment was endangered long before the advent of the World Wide Web. As Neil Postman noted in his 1985 book Amusing Ourselves to Death, the rise of

How Marconi Gave Us the Wireless WorldA)A hundred years before iconic figures like Bill Gates and Steve Jobs permeated our lives,an Irish- Italian inventor laid the foundation of the communication explosion of the 21st century.Guglielmo Marconi was arg

Passage OneQuestions 46 to 50 are based on the following passage.What is the place of art in a culture of inattention? Recent visitors to the Louvre report that tourists can now spend only a minute in front of the Mona Lisa before being asked to move o

Rich Children and Poor Ones Are Raised Very DifferentlyA) The lives of children from rich and poor American families look more different than ever before.B) Well-off families are ruled by calendars, with children enrolled in ballet, soccer and after-sc

After becoming president of Purdue University in 2013, Mitch Daniels asked the faculty to prove that their students have actually achieved one of higher education\'s most important goals: critical thinking skills. Two years before, a nationwide study of

The American Workplace Is Broken. Here\'s How We Can Start Fixing It.[A] Americans are working longer and harder hours than ever before.83% of workers say they\'re stressed about their jobs, nearly 50% say work-related stress is interfering with their sl

Are We in an Innovation Lull?[A] Scan the highlights of this year\'s Consumer Electronics Show ( CES ), and you may get a slight feeling of having seen them before. Many of the coolest gadgets this year are the same as the coolest gadgets last year--or

First-Generation College-Goers: Unprepared and BehindKids who are the first in their families to brave the world of higher education come on campus with little academic know-how and are much more likely than their peers to drop out before graduation.[A

Passage OneQuestions 46 to 50 are based on the following passage.Having a rival can keep you committed to achieving your goals and enhance your overall performance. But before you go out and find an entrepreneur to outcompete, ifs important to understa