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【单选题】
A Bridge for Squirrels San Francisco has its cable cars. Seattle has its Space Needle. And, Longview has its squirrel bridge. The bridge, which has attracted international attention, is now a local landmark. The Nutty Narrows Bridge was built in 1963 by a local builder, Amos Peters, to give squirrels a way to cross the busy road without getting flattened by passing cars. The original bridge was built over Olympia Way on the west edge of the library grounds. Before the bridge was built, squirrels had to avoid traffic to and from the Park Plaza office building where office staff put out a nutty feast for the squirrels. Many times, Peters and others who worked in and near Park Plaza witnessed squirrels being run over. One day Peters found a dead squirrel with a nut still in its mouth, and that day's coffee break discussion turned into squirrel safety. The group of businessmen cooked up the squirrel bridge idea and formed a committee to ask the blessing of the City Council (市政会).The Council approved, and Councilwoman Bess LaRiviere jokingly named the bridge "Nutty Narrows". After architects designed the bridge, Amos Peters and Bill Hutch started construction. They built the 60-foot bridge from aluminum and lengths of fire hose (消防). It cost 1000. It didn't take long before reports of squirrels using the bridge started. Squirrels were even seen guiding their young and teaching them the ropes. The story was picked up by the media, and Nutty Narrows became known in newspapers all over the world. In 1983, after 20 years of use, Peters took down the worn-out bridge. Repairs were made and crosspieces were replaced. The faded sign was repainted and in July 1983, hundreds of animal lovers attended the completion ceremony of the new bridge. Peters died in 1984 ,and a ten-foot wooden squirrel sculpture was placed near the bridge in memory of its builder and his devotion to the project.
A.
He is remembered for his love of animals
B.
He donated 1000→buildthebrid
C.
He was a member of the City Council
D.
He was awarded a medal for building the bridge
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【简答题】已知函数f(x)=x+sinx的导数为f'(x),则f'(0)=______.
【简答题】已知函数f(x)=x+sinx的导数为f'(x),则f'(0)=______.
【单选题】已知函数f(x)的定义域为(a,e),下图是f(x)的导函数f'(x)的图象,则下列结论中正确的有(  ) ①函数f(x)在(a,b)上单调递增; ②函数f(x)在(a,c)上单调递减; ③函数f(x)在(c,d)上单调递减; ④函数f(x)在(d,e)上单调递增.
A.
0个
B.
1个
C.
2个
D.
3个
【简答题】已知函数f(x)的导函数f'(x)=3x 2 -1,且f(1)=2,则f(x)的解析式为______.
【单选题】已知函数f(x)的定义域为[﹣2,+∞),部分对应值如表格所示,f'(x)为f(x)的导函数,函数y=f'(x)的图象如右图所示。若两正数a ,b 满足f(a+2b) <1 ,则 的取值范围是 [     ]
A.
B.
C.
【判断题】下述说法是否正确:惯性系中的观察者观测一个相对他做匀速相对运动的时钟时,会看到这个时钟比相对于他静止的相同的时钟走得慢些。( )A. 正确 B. 不正确
A.
正确
B.
错误
【单选题】在狭义相对论中,下列说法中哪些是正确的? ( ). ( 1 ) 一切运动物体相对于观察者的速度都不能大于真空中的光速 ( 2 ) 质量、长度、时间的测量结果都是随物体与观察者的相对运动状态而改变的 ( 3 ) 在一惯性系同时发生的两个事件,在另一惯性系一定也同时发生 ( 4 ) 惯性系中的观察者观察一个与他作匀速相对运动的时钟时,会看到这时钟比与他相对静止的相同的时钟走得慢些
A.
( 1 ) , ( 3 ) , ( 4 )
B.
( 1 ) , ( 2 ) , ( 4 )
C.
( 1 ) , ( 2 ) , ( 3 )
D.
( 2 ) , ( 3 ) , ( 4 )
【单选题】下列有关同源染色体的叙述中,正确的是( )
A.
由一条染色体复制而成的两条染色体
B.
同源染色体分离发生在减数第二次分裂过程中
C.
减数分裂过程中会出现同源染色体联会形成四分体的现象
D.
细胞分裂过程中,着丝点断裂后形成的两条染色体即为同源染色体
【单选题】如果αBC=62°30′00″,则RBC=( )。
A.
N62°30′00″W
B.
N62°30′00″E
C.
S62°30′00″W
D.
S62°30′00″E
【简答题】已知函数f(x)的定义域为[0,+∞),且f(4)=f(1)=1,f'(x)为f(x)的导函数,函数y=f'(x)的图象如图所示.则: (1)f(x)的单调递减区间为 ______; (2)点(a,b)所在平面区域 a≥0 b≥0 f(a+b)<1 所围成的面积是 ______.
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