1.单选题- (共4题)

A.肽键数目减少 4 个 |
B.氢原子数目增加 8 个 |
C.氨基和羧基分别增加 4 个 |
D.氧原子数目增加 2 个 |
A.![]() | B.![]() | C. ![]() | D. ![]() |

A. L-异亮氨酸是人体的必需氨基酸
B. 图中显示的是一种正反馈机制
C. 细胞内过多的L-异亮氨酸可能改变了苏氨酸脱氨酶的空间结构
D. 苏氨酸可与双缩脲试剂发生紫色反应
2.选择题- (共1题)
Do you remember the last time you read a book, or a magazine? Is checking e-mails or updating microblog your daily reading habit? If you're one of those who don't make a habit of reading regularly, you might be really out.{#blank#}1{#/blank#}
Stress Reduction
No matter how much pressure you have at work, in your personal relationships, or other issues in daily life, it all just slips away when you lose yourself in a great story.{#blank#}2{#/blank#}
Knowledge
Everything you read fills your head with new information, and you never know when it might come into use.{#blank#}3{#/blank#}Besides, you might lose everything else—your job, your money, even your health, but knowledge can never be taken from you.
Vocabulary Expansion
{#blank#}4{#/blank#} As a result, this will gradually enlarge your everyday vocabulary. Then you might become more knowledgeable and well-spoken, which can increase your self confidence and even help you get promotions more quickly.
Better Writing Skills
Exposure to well-written work has a great effect on your own writing. In other words, writing styles of other authors will influence your own work.{#blank#}5{#/blank#}
Now that reading has so many benefits, step away from your computer and go hunting for something new to read!
A. Here are some benefits of reading.
B. Here are some suggestions for your health.
C. The more you read, the more words you gain exposure to.
D. This goes hand-in-hand with the expansion of your vocabulary.
E. A well-written novel can bring you pleasure, and allow you to relax.
F. The more knowledge you have, the better-equipped you are for your life.
G. That is why beginners always learn how to write by reading the works of others.
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【1】题量占比
单选题:(4道)
选择题:(1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:3
7星难题:0
8星难题:0
9星难题:0