1.选择题- (共12题)
5.为探究茉莉酸(植物生长调节剂)对离体培养的成熟胡杨细胞质壁分离的影响,将细胞分别移到不同的培养液中继续培养3天,结果如表.下列叙述错误的是( )
组别 | 培养液中另添加的成分 | 结果 | |
NaCl | 茉莉酸 | ||
① | + | - | 部分细胞质壁分离 |
② | + | + | 细胞正常,无质壁分离 |
③ | - | - | 细胞正常,无质壁分离 |
注:“+”表示有添加,添加后NaCl浓度为100mmol•L﹣1,茉莉酸浓度为10﹣3mg•L﹣1;“﹣”表示无添加.
6.为探究茉莉酸(植物生长调节剂)对离体培养的成熟胡杨细胞质壁分离的影响,将细胞分别移到不同的培养液中继续培养3天,结果如表.下列叙述错误的是( )
组别 | 培养液中另添加的成分 | 结果 | |
NaCl | 茉莉酸 | ||
① | + | - | 部分细胞质壁分离 |
② | + | + | 细胞正常,无质壁分离 |
③ | - | - | 细胞正常,无质壁分离 |
注:“+”表示有添加,添加后NaCl浓度为100mmol•L﹣1,茉莉酸浓度为10﹣3mg•L﹣1;“﹣”表示无添加.
10.
为探究酵母菌的细胞呼吸,将酵母菌破碎并进行差速离心处理,得到细胞质基质和线粒体,与酵母菌分别装入A~F试管中,加入不同的物质,进行了如下实验(见下表)
试管编号 | 细胞质基质 | 线粒体 | 酵母菌 | |||
A | B | C | D | E | F | |
葡萄糖 | - | + | - | + | + | + |
丙酮酸 | + | - | + | - | - | - |
氧气 | + | - | + | - | + | - |
注:“+”表示加入了适量的相关物质,“﹣”表示未加入相关物质.
2.单项选择- (共13题)
13.
Lucy is a girl of great musical _________, and I’m sure she will become a well-known musician sooner or later.
A.ability | B.sense | C.value | D.potential |
14.
Why do we have to _________ Sue’s selfish behavior? We have to teach her to care for others.
A.keep up with | B.put up with |
C.catch up with | D.come up with |
15.
I don’t want to express any opinions on the plan until it has been _________.
A.tried out | B.watched out | C.come out | D.let out |
16.
Our monitor was absent. Otherwise I _________ the chair.
A.would not take | B.didn't take |
C.hadn't taken | D.wouldn't have taken |
17.
He gave up smoking to____________ the money for his son’s education.
A.set out | B.set aside |
C.set up | D.set down |
18.
After living there for one year, they have _________there.
A.accustomed to working | B.accustomed to work |
C.been accustomed to working | D.been accustomed to work |
20.
Do let your mother know all the truth. She appears______ everything.
A.to tell | B.to be told |
C.to be telling | D.to have been told |
21.
It is reported that the children from the earthquake-stricken areas are in
_________ need of love and attention.A.typical | B.concrete | C.desperate | D.actual |
22.
The winner of the Grand Slams said that he had owed his success to many people, his parents_________.
A.after all | B.by chance |
C.on purpose | D.in particular |
23.
---When did he meet his wife for the first time?
---It was _________ he came back from Africa that year _________ he met his wife.
---It was _________ he came back from Africa that year _________ he met his wife.
A.when; then | B.not until; that | C.not; until | D.only; when |
24.
In no country other than Britain, it has been said, ________ experience four seasons in the course of a single day.
A.people can | B.you can | C.can it | D.can one |
试卷分析
-
【1】题量占比
选择题:(12道)
单项选择:(13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:5
5星难题:0
6星难题:7
7星难题:0
8星难题:1
9星难题:0