1.单选题- (共3题)
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 |
A.将新鲜蔬菜与煮沸冷却的盐水(盐和清水的质量比为4∶1)混匀装瓶 |
B.发酵过程中始终要保持密封状态,泡菜坛盖边缘的水槽中要始终装满水 |
C.在酸性条件下,亚硝酸盐与对氨基苯磺酸发生重氮化反应形成玫瑰红色染料 |
D.随着发酵进行,亚硝酸盐含量逐渐增加,用比色法可进行亚硝酸盐含量的测定 |
A.用蒸馏水配制牛肉膏蛋白膝培养基,经高温、高压灭菌后倒平板 | B.取104、105、106倍的土壤稀释液和无菌水各0.1ml,分别涂布于各组平板上 | C.将实验组和对照组平板倒置,370C恒温培养24-48小时 | D.确定对照组无菌后,选择菌落数在300以上的实验组平板进行计数 |
2.选择题- (共2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
单选题:(3道)
选择题:(2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:0
7星难题:0
8星难题:0
9星难题:3