I don't have two sisters. 原句"I have two sisters"表示"拥有",其否定形式需借助助动词do,因主词为第一人称单数,搭配"do not"缩写为"don't",形成否定结构。现代英语普遍采用"don't/doesn't have"的否定表达,而"haven't"在此语境中属非标准用法,故唯一正确答案为"I don't have two sisters"。反馈 收藏
One of the most powerful growth engines and SaaS metrics to track is net negative MRR churn. When you have net negative churn, the additional revenue you generate from your existing customers month over month is outpacing the revenue you're losing throug
The Negative Volume Index (NVI) is a cumulative indicator, developed by Paul Dysart in the 1930s, that uses the change in volume to decide when the smart money is active. The NVI assumes that smart money will produce moves in price that require less volume than the rest of the investment...
What are the possible negative consequences if the use of animals in research is stopped?相关知识点: 试题来源: 解析 Drugs to cure infection will remain undiscovered, surgical and diagnostic techniques will remain undeveloped, and fundamental biological processes will remain mysteries....
The natural logarithm function ln(x) is defined only for x>0.So the natural logarithm of a negative number is undefined.ln(x) is undefined for x ≤ 0The complex logarithmic function Log(z) is defined for negative numbers too.For z=r⋅eiθ, the complex logarithmic function:...
automated tools like google search console or website monitoring services can help you identify and fix 404 errors by notifying you when they occur. this enables you to address the issue promptly, reducing the negative impact on user experience and search engine optimization (seo). can a 404 ...
One of the most common causes of negative float is the introduction of constraints in the schedule that can't be met. Consider a project schedule where each of the first three activities has some total float because a constraint is placed on the third activity. The float exists because the ...
结果1 题目 (A)10. What is a negative factor of the new test? A. It's unaffordable for some people. B. It has a great chance of errors. C. It's an addition to existing options. D. It causes people to get infected 相关知识点: 试题来源: 解析 答案见上 反馈 收藏 ...
6.My grandparents sometimes criticize me. One reason is that children today have an easy life. A.T B.F 答案:A 7.Grandparents don't work anymore because they are tired. A.T B.F 答案:B 8.Grandparents had the same kinds of things as people of their age when they were young. ...
most closely guarded part of the body. Locked safely behind the blood-brain barrier, it was broadly free of the harm of viruses and the battles started by the immune system(免疫系统). Then,about 20 years ago, some researchers began to won...