1.选择题- (共10题)
6.
有一种纽扣微型电池,其电极分别是Ag2O和Zn。电解池是KOH溶液,所以俗称银锌电池,该电池的电极反应式为Zn+2OH--2e-=Zn(OH)2,Ag2O+H2O+2e-=2Ag+2OH-。下列说法,正确的是:①锌为负极,Ag2O为正极②放电时,正极附近pH值上升③放电时,负极附近溶液pH值降低④溶液中阴离子向正极方向移动,阳离子向负极方向移动( )
7.
有一种纽扣微型电池,其电极分别是Ag2O和Zn。电解池是KOH溶液,所以俗称银锌电池,该电池的电极反应式为Zn+2OH--2e-=Zn(OH)2,Ag2O+H2O+2e-=2Ag+2OH-。下列说法,正确的是:①锌为负极,Ag2O为正极②放电时,正极附近pH值上升③放电时,负极附近溶液pH值降低④溶液中阴离子向正极方向移动,阳离子向负极方向移动( )
8.下列有关同源染色体的叙述中,正确的是( )
①X、Y染色体大小、形状不同,因此不属于同源染色体
②生殖细胞中不可能存在同源染色体
③同源染色体的同一位置可能存在相同基因
④一个染色体组中一定不含同源染色体
①X、Y染色体大小、形状不同,因此不属于同源染色体
②生殖细胞中不可能存在同源染色体
③同源染色体的同一位置可能存在相同基因
④一个染色体组中一定不含同源染色体
9.下列有关同源染色体的叙述中,正确的是( )
①X、Y染色体大小、形状不同,因此不属于同源染色体
②生殖细胞中不可能存在同源染色体
③同源染色体的同一位置可能存在相同基因
④一个染色体组中一定不含同源染色体
①X、Y染色体大小、形状不同,因此不属于同源染色体
②生殖细胞中不可能存在同源染色体
③同源染色体的同一位置可能存在相同基因
④一个染色体组中一定不含同源染色体
2.单项选择- (共8题)
11.
Washing machines made by China have won ______worldwide attention and Haier has become _____popular name.
A.a; the | B./;a | C./;the | D.the; a |
12.
Professor Williams keeps telling his students that the future ___ to the well-educated.
A.belongs | B.is belonged |
C.is belonging | D.will be belonged |
13.
She stared at the painting, wondering where she ________ it.
A.saw | B.has seen |
C.sees | D.had seen |
14.
Michael’s new house is like a huge palace, ______with his old one.
A. comparing B. compares
C. to compare D. compared
A. comparing B. compares
C. to compare D. compared
15.
Peter was so excited _________he received an invitation from his friend to visit Chongqing.
A.where | B.that | C.why | D.when |
16.
We should consider the students’ request________ the school library should provide more books on popular science.
A.that | B.when | C.which | D.where |
17.
Unsatisfied with the payment, he took the job just to got some work experience.
A.though was he | B.though he was |
C.he was though | D.was he though |
试卷分析
-
【1】题量占比
选择题:(10道)
单项选择:(8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:1
5星难题:0
6星难题:7
7星难题:0
8星难题:0
9星难题:0