体外刺激T细胞增殖反应的刺激物包括（） A.血凝素（PH A. B.刀豆素A（Con

手厥阴心包经五输穴之经穴是（）

A.曲泽

B.间使

C.郄门

D.经渠

E.大陵

Ⅰ、①用游标卡尺（卡尺的游标有20等分）测量一支铅笔的长度，测量结果如图1所示，由此可知铅笔的长度是______cm．

②在“研究匀变速直线运动”的实验中，如图2为实验得到的一条纸带，纸带上每相邻的两计数点间的时间间隔均为0.1s，测得A到B和B到C的距离分别为5.60cm和7.82cm，则物体的加速度大小为______m/s²，B点的速度大小为______m/s．

Ⅱ、“验证力的平行四边形定则”实验中

①部分实验步骤如下，请完成有关内容：

A．将一根橡皮筋的一端固定在贴有白纸的竖直平整木板上，另一端绑上两根细线．

B．在其中一根细线挂上5个质量相等的钩码，使橡皮筋拉伸，如图3所示，记录______、______、______．

C．将步骤B中的钩码取下，分别在两根细线上挂上4个和3个质量相等的钩码，用两光滑硬棒B、C使两细线互成角度，如图4所示，小心调整B、C的位置，使______，记录______．

②如果“验证力的平行四边形定则”得到验证，那么图4中

某制药厂4月生产销售激素类药物不含税销售额200万元，生产销售避孕药品不含税销售额50万元，当月征税项目和免税项目进项税不能准确区分，进项税合计10万元，则当月应缴纳增值税26万元。( )

Seventeen-year-old Quantae Williams doesn’t understand why the U. S. Supreme Court struck down his school district’s racial diversity program. He now (61) the prospect of leaving his mixed-race high school in suburban Louisville and (62) to the poor black downtown schools where he (63) in fights. "I’m doing (64) in town. They should just leave it the (65) it is," said Williams, using a fond nickname for suburban Jeffersontown High School, (66) he’s bused every day from his downtown neighborhood. "Everything is (67) , we get along well. If I go where all my friends go, I’ll start getting in trouble again," Williams said as he took a (68) from his summer job (69) clothing (70) for poor families.

Last month’s 5-4 ruling by the Supreme Court struck down programs that were started voluntarily in Louisville and Seattle. The court’s decision has left schools (71) the country (72) to find a way to protect (73) in their classrooms. Critics have called the decision the biggest (74) to the ideals of the 1954 Brown vs. Board of Education (75) , which outlawed racial segregation in U. S. public schools. With students already (76) to schools for the (77) year that begins in September, (78) will be immediately affected by the Supreme Court decision. In Jefferson County, officials said it could be two years (79) a new plan is (80) place, leaving most students in their current schools.

75（）

A.academic

B.scholarly

C.educational

D.pedagogical