题目内容
（请给出正确答案）
提问人：网友cong123
发布时间：2022-01-07
[主观题]
20. What is the role an effective beginning can play in your presentation？ It can draw and set the proper tone.
简答题官方参考答案
（由简答题聘请的专业题库老师提供的解答）
查看官方参考答案
网友您好，请在下方输入框内输入要搜索的题目：
搜题
题目内容
（请给出正确答案）
简答题官方参考答案
（由简答题聘请的专业题库老师提供的解答）
更多“20. What is the role an effective beginning can play in your presentation？ It can draw and set the p…”相关的问题
第1题
The tape recorder can be a very effective(A) and excited(B) aid to teaching(C) if it is used(D) imaginatively.
点击查看答案
第2题
请根据短文的内容，回答题。
Bringing Nanotechnology to Health Care for the Poor
Nanotechnology uses matter at the level of molecules and atoms. Researchers are finding different uses for particles with a length of one nanomcter, or one-billionth of a meter, These include things like beauty products and dirt-resistant clothing. But one area where many experts believe nanotechnology holds great promise is medicine.
Last week, speakers at a program in Washington discussed using nanotechnology to improve health care in developing countries. The program took place at the Woodrow Wilson International Center for Scholars. Peter Singer at the University of Toronto says a nanotechnology called quantum dots could be used to confirm cases of malaria. He says it could offer a better way than the traditional process of looking at a person&39;s blood under a microscope.
In poor countries, this process is often not followed. As a result, sick people may get treated for malaria even if they do not have it. Such misuse of medicines can lead to drug resistance.
Quantum dots are particles that give off light when activated. Researchers are studying ways to program them to identify diseases by lighting up in the presence of a targeted molecule.
Experts say nanotechnology shows promise not just for diagnosing diseases, but also for treating them. Piotr Grodzinski of the National Institutes of Health talked about how nanotechnology could make drugs more effective. He talked about cancer drugs already developed with nanotechnology. He says if a drug can target a cancer locally in the body, then much less of it might be needed, and that means lower side effects.
Andrew Maynard is chief scientist for the Project on Emerging Nanotechnologies at the Woodrow Wilson Center. He noted that Brazil, India, China and South Africa are currently doing nanotechnology research that could help poor countries. But he also noted that there is some risk in using nano-materials. He says nanometer-sized particles behave differently in the body and the environment compared to larger particles. Experts say more investment in research is needed to better understand these risks.
Which of the following uses ofnanotechnology is NOT mentioned in the passage？ 查看材料
A.make beauty products and dirt-resistant clothing
B.To produce better and lighter building materials
C.help more accurately diagnose diseases
D.To help more effectively treat diseases
第3题
Diversification can effectively reduce risk. Once a portfolio is diversified the type of risk remaining is
A、individual security risk.
B、riskless security risk.
C、risk related to the market portfolio
D、total standard deviations.
第5题
The idea that Man is an integral part of nature involves adapting the body to changes in the climate and regulating spiritual activities, daily food and clothing and living habits.
第6题
If any damage occurs a claim may_______ with the insurance agent at your area.
A、be filed
B、be submitted
C、file
D、submit
第7题
You could actually decrease your risk and increase your return by investing in __________.
A、More bonds and less stocks
B、More bonds and more stocks
C、Less bonds and less stocks
D、Less bonds and more stocks
第9题
It can be inferred from the passage that birds were probably dominant in the skies
A、in the early Triassic period
B、before the appearance of pterosaurs
C、after the decline of pterosaurs
D、before dinosaurs could be found on land.
第10题
The purpose of the benefits system of ABC Company is to .
A、encourage its employees to work overtime
B、get its employees out of the office
C、develop its unique marketing strategies
D、increase its overseas market share
