1.选择题- (共11题)
4.利用如图装置测定中和热的实验步骤如下:
①用量筒量取50mL 0.25mol/L硫酸倒入小烧杯中,测出硫酸温度;
②用另一量筒量取50mL 0.55mol/L NaOH溶液,并用另一温度计测出其温度;
③将NaOH溶液倒入小烧杯中,设法使之混合均匀,测出混合液最高温度.
回答下列问题:
5.利用如图装置测定中和热的实验步骤如下:
①用量筒量取50mL 0.25mol/L硫酸倒入小烧杯中,测出硫酸温度;
②用另一量筒量取50mL 0.55mol/L NaOH溶液,并用另一温度计测出其温度;
③将NaOH溶液倒入小烧杯中,设法使之混合均匀,测出混合液最高温度.
回答下列问题:
10.“甲型H1N1”流感疫情已构成“具有国际影响的公共卫生紧急事态”.已知扎那米韦是流感病毒神经氨酸酶抑制剂,其对流感病毒的抑制是以慢结合的方式进行的,具有高度特异性,其分子结构如图所示.下列说法正确的是( )
11.糖类、脂肪和蛋白质是维持人体生命活动所必需的三大营养物质.以下叙述正确的是( )
①油脂不能使溴的四氯化碳溶液褪色
②汽油、柴油和植物油都是碳氢化合物
③葡萄糖、麦芽糖在一定条件下既能发生水解反应,又能发生银镜反应
④葡萄糖和果糖互为同为异构体
⑤加热、紫外线、酒精、福尔马林、饱和硫酸钠溶液会使蛋白质发生盐析,具有可逆性
⑥可用碘水检验淀粉是否水解完全
⑦淀粉和纤维素的组成都是(C6H10O5)n,不是同分异构体,且水解最终产物都是葡萄糖
⑧纤维素乙酸酯、油脂和蛋白质在一定条件下都能水解
⑨淀粉、棉花、羊毛、蚕丝、油脂都属于高分子化合物.
2.单项选择- (共12题)
13.
Both teams were in hard training; was to lose the game.
A.either | B.neither | C.another | D.the other |
14.
One of the provinces in the north has to form a new state.
A.broken down | B.broken up | C.broken out | D.broken away |
16.
The little boy the last bit of toothpaste from the tube.
A.squeezed out | B.squeezed in | C.pushed in | D.pushed out |
17.
Everybody thought the battle would be . And they were right.
A.losing | B.missing | C.lost | D.missed |
19.
________by the beauty of nature,the girl from London decided to spend another two days on the farm.
A.Attracting | B.Attracted |
C.To be attracted | D.Having attracted |
20.
once before, after your class I got my visa(签证). So thank you again.
A.Having rejected | B.Rejected | C.Being rejected | D.To be rejected |
21.
Who is the man a blue shirt? I have never seen him before.
A.is wearing | B.dressed up | C.dressed in | D.worn |
22.
There is plenty of rain in the southeast, there is little in the northwest.
A.because | B.therefore | C.while | D.as |
试卷分析
-
【1】题量占比
选择题:(11道)
单项选择:(12道)
-
【2】:难度分析
1星难题:0
2星难题:0
3星难题:0
4星难题:0
5星难题:0
6星难题:12
7星难题:0
8星难题:0
9星难题:0