计算：①sin45°•cos45°+tan30°；②2-1-tan60°+(5-1)°+|-3|．-数学

更多内容推荐

• 24. Children should be taught to share, ____________ the parents must attach a lot of importance.A．i
• 计算：-13÷3×13+(3.14-π)0-(-13)-2．-数学
• The number of people who have had flu (流感) in America this month is________as last month.[ ]A．twice
• Traffic is bad, ______ in the city center during the rush hours.A．particularly B．terriblyC．mostlyD．n
• Although the country has had political independence for over a century,it needs the support of its n
• （1）计算：(1-22)0+(15)-1-2cos45°+|-2|；（2）先化简，再求值：12a-a2-1a2-2a+1÷a2+aa-1，其中a=-12．-数学
• （12）-1+（-2009）0-9+2sin30°=______．-数学
• During World WarⅡ, Japan attacked Pearl Harbor without declaring war _____ America.A．in B．with C．to
• You can go to see your sick granny, but you mustn’t stay there _____ visiting hours.A．acrossB．withou
• （1）计算：|-2|+2sin30°-(-3)2+(tan45°)-1（2）计算：sin60°+tan45°cos30°-4sin230°-数学
• (-3)0-27+|1-2|+12+3．-数学
• He spoke very slowly, but he still didn’t get his meaning _______. A across B cross C through D thou
• The little girl is not quite confident ______ her ability to go to a key university and she is very
• 计算：（-1）2011-（π-3）0+(13)-2+4．-数学
• 计算：2cos60°-(2009-π)0+9=______．-数学
• Nowadays the roles of husband and wife are not asdefined as before, especially when both partners wo
• Some lawyers have long called for changes to these laws which they think are ___ in the 21 st Centur
• 计算-（-m）-1的结果为（）A．mB．-mC．1mD．-1m-数学
• Write your name and address on your bag ________ you lose it. A．in any caseB．in caseC．in no caseD．in
• We sailed for 2 months and finally the land was _____A．in our sightB．in sightC．got sight ofD．at firs
• —Is there anything I can do for you?—There seems to have been a technical problem—______，that’s what
• 计算：(2-1)0+8-6sin45°-(-1)2010．-数学
• We should’t only be satisfied with the present life, We are trying to look ______ and see what our f
• —Hey, did you enjoy the vacation in London? —No．Our vacation was totally ruined; not only was the fo
• Somehow this seems to me to be _______. How could a team that had fought for Canada before suddenly
• _______ the trouble they were in, they still managed to help us with some money. A．In spite ofB．Beca
• your moving out of the twenties, we are giving you a marvelous birthday party.A．In favour ofB．In hon
• —Charlie has been nowherefor three days. What has happened to him?—Didn’t you know he had gone to Ho
• He goes to work every day ______.A．except for rainy daysB．besides it rainsC．but that it rainsD．excep
• She is not on good terms with Mr. Smith; ______even if invited she would not attend his party.A．othe
• 计算|-12|+9-sin30°+（π+3）0=______．-数学
• 计算：（1）4+|-3|-(2-1)0（2）先化简，再求值：（a+b）（a-b）+b（2a+b），其中a=1，b=2．-数学
• He is not ____ open-minded a man that no one enjoys staying with him.A．suchB．soC．tooD．rather-高一英语
• _____your poor record in school , we think you should study harder.A．In charge ofB．In case ofC．In sp
• It is most________that the environmentalists will come to the area to investigate the possible damag
• It was ______ that they went for a drive in the countryside.A．such a fine weatherB．so fine a weather
• The winner of the Grand Slams said that he had owed his success to many people, his parents_________
• The tiger, once a ____ animal to humans, is now ____of disappearing on the earth.A．dangerous, danger
• 计算：（2-1）-1-8-（2-tan50°）0．-数学
• 计算：|-2|-(3-1)0=______．-数学
• The study of natural history is not something to be left to biologists. In fact, their capacity ____
• It is amazing that the little boy can swim ________the river ________100 meters in width. A．across;
• I can’t give you an answer right now. I’d like more time to consider my decision.A．stillB．fairlyC．qu
• Though Jack is often tired ______ his job, he is never tired ______ it. In fact, he enjoys it. [ ]A.
• 计算(-13)-2-20110=______．-数学
• After running past the finishing line, she was .A．out of controlB．out of dangerC．out of breathD．out
• –You are Mr. Zhang, aren’t you? --______. A．AbsolutelyB．NaturallyC．NormallyD．Completely-高一英语
• In order to support the big family, he worked so hard that_______ he made himself ill.A．occasionally
• 计算：4-(π-2009)0+(-12)-1-|2-1|．-数学
• Washington, a state in the United States, was named _____ one of the greatest American presidents.A．