（2分）小刚和小明分别用沿斜面向上的力F甲、F乙把同一重物匀速拉到两个斜面的顶端

完成句子（共10小题，每小题1分，满分10分）

1．The zoo ________(吸引) many visitors every day, especially children.

2．Have they __________(宣布) when the race will begin?

3．He was a__________ in the book and didn’t hear the bell at all.

4．You must pay for the book______  ________(提前).

5．The world is __________ ___________（分成）seven continents.

6．You can ________ ________(遗漏) the parts of the story that are not interesting.

7．I learn that the medical team_________ __________(由……组成) ten doctors and twenty nurses.

8.  John Snow proved that the water _____ _____ _____ (应负责任) for cholera.

9．The teacher _________(invite) to the concert arrived on time.

10．John received an invitation to dinner, and with his work _________(finish), he gladly accepted it.

在Windows菜单中，暗淡的命令名项目表示该命令（ ）。

A．暂时不能使用

B．正在执行

C．包含下一层菜单

D．包含对话框

维生素C，又名抗坏血酸，化学式为C₆H₈O₆．某同学设计了两个实验来证明维生素C药片中含碳元素并具有酸性．请代他完成下列实验报告．

桩顶为自由端的钢管桩，桩径d＝0.6m，桩入土深度h＝10m，地基土水平抗力系数的比例系数m＝10MN/m4，桩身抗弯刚度EI＝1.7×105kNm²，桩水平变形系数a＝0.591/m，桩顶容许水平位移X_0a＝10mm，按《建筑桩基技术规范》（JCJ94—94）计算，单桩水平承载力设计值最接近（）。

A.75kN

B.102kN

C.143kN

D.175kN

在高速公路行车一旦误过出口匝道可以在高速公路上变换车道，并快速倒车回到匝道口自行离开。（）