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问题：一个质量为m的球位于光滑地面和竖直光滑墙面的交界处，如图3-1所示，外力F与水平方向成θ角．设墙对球的作用力为F1，地面对球的作用力为F2，则（ ） ...
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问题：设，则a的取值范围是（ ） ...
问题：John was_______he lay down for an hour before dinner....
问题：George and Margaret and their children?21?at 140 Davis Street,22?the street from a small park.Their house is just off the main road.George usually goes to work by bus,but sometimes he goes?23?his car...
问题：About 35%of all high school graduates in America continue their education in an institution of higher learning.The word college is used to refer to either a college or a university.These institutions offer four-year programs that lead to a Bachelor of Art...
问题：设函数(x)=2x3+3mx2-36x+m，且′(-1)=-36． (Ⅰ)求m； (Ⅱ)求(x)的单调区间．...
问题：有一圆筒呈圆柱形，高16cm，直径12cm，人眼在筒斜上方某处望筒中，所见筒侧离筒顶距离为9cm，当筒中盛满水时，则恰能看到筒侧的最低点，则水的折射率是__________....
问题：下列句子中加点成语使用正确的一句是（ ）...
问题：Eleanor Roosevelt was the wife of America′s 32nd president,Franklin Roosevelt.She helped her husband in?many ways during his long（21）life.She also became one of the most（22）women in America.She fough...
问题：通读下面的短文，掌握其大意。从每小题的四个选项中选出可填入相应空白处的最佳选择，并把它前面的大写字母填入左边括号里。 ...
问题：Our eating habits are very important for good health and a strong body.There are times when?most of us would rather eat sweets and ice-cream than meat and rice.Sweets and ice-cream are not?bad if we ...
问题：如图3—7所示，质量为2 kg的木块在F=10 N的力的作用下沿水平面做匀速直线运动，力F与水平方向的夹角是60°，求木块与水平面之间的滑动摩擦因数（g取10 m/s2）. ...
问题：Why do you insist on________ ...
问题：（ ）She can speak Japanese better than________else....
问题：According to the passage,coins once had real value as currency because they______....
问题：已知二氯苯的同分异构体有三种，由此可知四氯苯的同分异构体数目为（ ）A.3 B.4 C.5 D.6...
问题：I have been hearing-impaired in my life since I was five years old.Putting on hearing aids in the?morning has been just as（21）as brushing my teeth.However I never believed that it should limit?my（22）in any way. During my 17 years I have met many people wh...
问题：提示：Tom和Lester两人正在聊天，彼此问对方上一个周末是怎样度过的。Tom说他上星期六晚上同Si咖一道吃了饭，而Lester说他星期l3去电影院看了一场电影。 Tom:51 Lester:Not bad.What about you? Tom:Not bad,either.What did you do last weekend? Lester:Well,52 Tom:Oh,53 Lester:The Lion King. Tom:Oh,really?54 Lester:Yes,it was goo...
问题：Our eating habits are very important for good health and a strong body.There are times when?most of us would rather eat sweets and ice-cream than meat and rice.Sweets and ice-cream are not?bad if we eat them at the end of a meal.If we eat them before a me...
问题：阅读下面的文言文，回答{问题。 前日范希文①贬官后，与足下②相见于安道③家，足下诋诮希文为人。予始闻之，疑是戏言；及见 师鲁④，亦说足下深非希文所为，然后其疑遂决。希文平生刚正、好学、通古今，其立朝有本末，天下所共知。今又以言事触宰相得罪。足下既不能为辩其非辜，又畏有识者之责已。遂随而诋之，以为当黜，是可怪也!夫人之性，刚果懦软，禀之于天，不可勉强，虽圣人亦不以不能责人之必能。今足下家有老母，身惜官位，惧饥寒而顾利禄，不敢一忤宰相以近刑祸，此乃庸人之常情，不过作一不才谏官尔。虽朝廷君子，亦将闵足下之不能，...
