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【简答题】
The students in Shanghai No. 3 Girls High School have a flower-arrangement (插花) lesson every week. The course is the first of its kind among middle schools in Shanghai. It helps the students to enjoy the of flowers better. That’s why the course has become very popular the students. The teachers of the course are all specially trained(专门地培训). They are at this art and work hard at passing on the skill students. So far, many students in the school have a lot of prizes in this field. In order to further the students’ skills, the teachers usually play while students are arranging flowers. Students are with the music, and they more good ideas for flower-arrangement. Besides, the teachers teach the students other skills at the time. For example, they ask the students to compositions(作文) about flowers. In this way, students not only art education but also improve(提高) their writing skills. Several months ago, some foreign teachers the school. When they saw common flowers become more lively and meaningful, they were amazed and interested. They made videos and would play them in class for their own after they returned home. 小题1: A.color B.beauty C.smell D.shape 小题2: A.between B.around C.among D.about 小题3: A.well B.nice C.great D.good 小题4: A.with B.for C.to D.in 小题5: A.beaten B.hit C.won D.struck 小题6: A.drop B.decide C.develop D.train 小题7: A.music B.games C.jokes D.sports 小题8: A.happy B.popular C.careful D.angry 小题9: A.think of B.run out of C.hold on D.put off 小题10: A.always B.never C.hardly D.seldom 小题11: A.different B.same C.another D.other 小题12: A.read B.play C.write D.work 小题13: A.get B.give C.make D.take 小题14: A.arrived B.went C.got D.visited 小题15: A.parents B.friends C.students D.Classmates
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【单选题】25℃时,在等体积的 ① pH=0的H 2 SO 4 溶液、② 0.05 mol/L的Ba(OH) 2 溶液、③ pH=10的Na 2 S溶液、④ pH=5的NH 4 NO 3 溶液中,发生电离的水的物质的量之比是 [     ]
A.
1∶10∶10 10 ∶10 9
B.
1∶5∶5×10 9 ∶5×10 8
C.
1∶20∶10 10 ∶10 9
D.
1∶10∶10 4 ∶10 9
【简答题】已知 BaSO 4 的 , 根据下列各个条件计算 BaSO 4 溶解度 。 1 在纯水中: ( ) 2 考虑同离子效应,在 0.10 mol∙L -1 BaCl 2 溶液中:( ) 3 考虑盐效应,在 0.10 mol∙L -1 NaCl 溶液中 [ 已知 ] :( ) 4 考虑酸效应,在 2.0 mol∙L -1 HCl 溶液中 [H 2 SO 4 的 Ka 2 =1.0 × 10 -2 ] :...
【单选题】以下属于生产异样处理措施的是( )。
A.
更改货物名称
B.
扩充厂房面积
C.
扩充管理人员
D.
了解原因,及时调配生产资源(如增加设备、增加生产人员等)
【单选题】N A 代表阿伏加德罗常数,下列叙述错误的是 [ ]
A.
10 mL质量分数为98%的H 2 SO 4 ,用水稀释至100 mL,H 2 SO 4 的质量分数为9 . 8%
B.
在H 2 O 2 +Cl 2 2HCl+O 2 反应中,每生成32 g氧气,则转移2 N A 个电子
C.
标准状况下,分子数为 N A 的CO、C 2 H 4 混合气体体积约为22 . 4 L,质量为28 g
D.
一定温度下,1 L0 . 50 mol L -1 NH 4 Cl溶液与2 L0 . 25 mol L -1 NH 4 Cl的溶液含NH 的物质的量不同
【单选题】阻值为 R 的两个电阻串联接在电压为 U 的电路中,每个电阻消耗的功率为 P ;若将两个电阻改为并联,仍接在电压为 U 的电路中,则每个电阻消耗的功率为( )。
A.
P
B.
2P
C.
3P
D.
4P
【单选题】阻值为 R 的两个电阻串联接在电压为 U 的电路中,每个电阻消耗的功率为 P ;若将两个电阻改为并联,仍接在电压为 U 的电路中,则每个电阻消耗的功率为( )。
A.
P
B.
2P
C.
4P
D.
P/2
【单选题】以下属于生产异样处理措施的是
A.
更改货品名称
B.
扩充建筑面积
C.
扩充管理人员
D.
检查原因,及时调配生产资源(如增加设备、增加生产人员等)
【单选题】25 ℃时,在等体积的①pH=0的H 2 SO 4 溶液,②0.05 mol·L - 1 的Ba(OH) 2 溶液,③pH=10的Na 2 S溶液,④pH=5的NH 4 NO 3 溶液中,发生电离的水的物质的量之比是
A.
1∶10∶10 10 ∶10 9
B.
1∶5∶5×10 9 ∶5×10 8
C.
1∶20∶10 10 ∶10 9
D.
1∶10∶10 4 ∶10 9
【单选题】在Z7中,模x={1,2,3,4,5,6},则x^2=
A.
{1}
B.
{1,2}
C.
{1,2,4}
D.
{0,1,3,5}
【单选题】在1 mol/L H2SO4溶液中,以0.05 mol/L Ce4+溶液滴定0.05 mol/L Fe2+溶液,其化学计量点的电位为1.06V,则对此滴定最适宜的指示剂时()。
A.
硝基邻二氮菲-Fe(II)(jθ’= 1.25V)
B.
邻二氮菲-Fe(II)(jθ’= 1.06V)
C.
二苯磺胺酸钠(jθ’= 0.84V)
D.
二苯胺(jθ’= 0.76V)
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