在糖的纸色谱中，常用上述显色试剂，其中使酮糖呈红色的是（） A．硝酸银试剂 B．三苯

第一节完形填空 

Japanese high school students do not drive cars. Many either walk or ride bicycles if distance is not too great. In other cases, a lot of students must  1    public buses and trains, often changing lines several times in order to reach their  2      . it is common for students to  3    two or more hours each day on public transportation. After junior high school, students attend schools based on standardized high school entrance examination scores. As a result some students travel a great distance to  4       the school. The school day begins at 8:30, so students may leave home as early as 6:30. While some students sleep or study during their long travel, public transportation also   5       a chance for socializing with peers. Students 6       to school is regulated by school policies. There policies may prohibit   7   activities in public－chewing gum, consuming snacks,     8  books while walking－anything that might reflect  9     on the reputation of the school. Each school has a unique uniform that makes its students easily identifiable to the public. School policies often require students to  10     on buses and trains, leaving seats open for other passengers in order to show his thoughtfulness（关怀；体贴） towards others.

(   ) 1. A. go           B .have          C. take          D. get

(   ) 2. A. homes        B. destinations     C. schools       D. classrooms

(   ) 3. A. take          B. cost           C. spend         D .have

(   ) 4. A. go           B. leave          C. attend        D .pass

(   ) 5. A. gives         B. offers         C. sends         D .takes

(   ) 6. A. on the way    B. in the way      C .by the way    D. at the way

(   ) 7. A. sure         B. certain         C. special        D. probable

(   ) 8. A. carrying      B. taking         C. holding       D .reading

(   ) 9. A. worse        B. well          C. badly         D. truly

(   ) 10. A. silence      B. sit            C. seat          D. stand

对一级平面位移观测的控制点应配备强制对中装置，强制对中装置的对中误差最大不应超过（）。

A.±0.001mm

B.±0.01mm

C.±0.1mm

D.±1.0mm

简述学校教育有哪些特点。

瓦斯抽采系统包括（）。

A.抽采泵站

B.瓦斯管路

C.放水器

D.钻孔和封孔设备

E.计量和监测仪器