1.非选择题- (共1题)

(l)据题推测亲本的基因型为 。
(2)自然条件下叶和果实均无苦味的个体的基因型可能有 种。
(3)若你是育种工作者,应选育表现型为 的黄瓜,为了获得这样的黄瓜可采取杂交育种的方法:让F1自交得F2,在F2中表现型符合要求的个体中纯合子所占比例为 ,为了获得稳定遗传的个体还需进行连续自交,并不断淘汰 (表现型)的个体。
2.单选题- (共5题)
A.在最基本的生命系统中,H2O有自由水和结合水两种存在形式 |
B.由氨基酸形成多肽时,生成物H2O中的氢来自氨基和羧基 |
C.有氧呼吸时,生成物中H2O中的氢来自线粒体中丙酮酸的分解 |
D.H2O在光下分解,产生的[H]将固定的CO2还原成(CH2O) |

A.组二F1基因可能是AaBbCcDd
B.组五F1基因可能是AaBbCcDdEE
C.组二和组五的F1基因型一定相同
D.这一对相对性状最多受四对等位基因控制,且遵循自由组合定律
A.青蛙与稻飞虱是捕食关系 |
B.水稻与青蛙是竞争关系 |
C.病毒V与青蛙是寄生关系 |
D.水稻和病毒V是互利共生关系 |
A.醋酸菌在无氧条件下利用乙醇产生醋酸 |
B.酵母菌在无氧条件下利用葡萄糖汁产生酒精 |
C.泡菜腌制利用了乳酸菌的乳酸发酵 |
D.腐乳制作利用了毛霉等微生物的蛋白酶和脂肪酶 |
3.选择题- (共3题)
How to Become an Activist (活动家)
Activists are people who see the need for change and devote their time to doing something about it.{#blank#}1{#/blank#}If you are interested in it you can do so.
{#blank#}2{#/blank#}This could be anything from a student club to a national organization (like the American Civil Liberties Union or the National Organizers Alliance). Most activist organizations offer different levels of involvement, so you can do whatever you feel most comfortable with, whether that means attending meetings and demonstrations or just donating a little money when you can.
Volunteer your time. One of the best ways to make a difference is to volunteer your time. Reach out to organizations in your community that do work for your cause, and ask how you can help.
Donate money or supplies.{#blank#}3{#/blank#}If you can't afford to donate money to an organization that supports your cause, you may be able to donate other things they need, like clothing or canned food.
Reach out to family and friends. Tell your family and friends about your cause, and invite them to get involved. If they are interested, share literature about your cause or just talk to them about what you have learned.{#blank#}4{#/blank#}
Promote your cause on social media. You can use social media to help keep your friends and followers informed about the causes you support.{#blank#}5{#/blank#}Also, you can invite your friends to attend events or donate to fundraisers for your cause.
A. Take classes on issues related to your cause.
B. Join an organization that supports your cause.
C. They are driven by passion and a vision for a better future.
D. If you do volunteer work, invite them to volunteer with you.
E. Most activists or charitable organizations need resources to do their work.
F. Post useful articles and write about what you are doing to stay involved.
G. If you can't reach out to them in person, then try connecting to people online.
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【1】题量占比
非选择题:(1道)
单选题:(5道)
选择题:(3道)
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【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:3
7星难题:0
8星难题:1
9星难题:2